I've got a best friend that I've known since high school that I've always had a huge crush for, but was too afraid of screwing up our friendship with my lust to ever try to do anything about it.
We got pretty close in high school, spent the night at each other's houses a lot, and got pretty casual around each other as far as changing, nudity, stuff like that.
He was a wrestler, had that ripped body, and his dick was impressive.
After high school, he went off to the Air Force and I went to college and we kinda lost track of each other for a few years, until by sheer coincidence we ended up working together at the same place about 10 years after high school, and reconnected.
We went out together a lot, got shitfaced and talked a lot of shit, but nothing every happened.
Eventually, he got married and popped off a couple of kids in no time.
We still hung out together, but instead of going out, it was usually getting shitfaced in his hot tub on the weekends and spending all nite out there drinking beer and talking.
One of his "rules" about he hot tub is that we never wore any swim suits. We usually went out there after dark and his wife and kids were asleep, which meant we just grabbed a towel and went out naked.
Drinking a lot of beer meant having to piss a lot, and he and I would whisle at each other and shit when one stood up to piss over the edge of the hot tub. He did have a perfect ass, and I enjoyed the chance to stare at it while he was draining his radiator, and my whistle compliments weren't all in good fun.
One particular night of doing this, we started talking about all the crazy shit we did and got away with in high school, and all the girls we banged or wanted to bang (I'm bi, and knocked off my share of hot pussy starting at age 14).
The conversation had me pretty well stiff, and every 20 minutes when the hot tub jets would time-out and quit, I'd make a point of checking out what was going on with his dick when the bubbles settled down and I could see it.
Seeing that he was somewhat hard too, I was drunk enough (brown bottle courage?) to just blurt out that all this talk had me hard as a rock. Without hesitating, he replied that he had the same problem, but, there was nothing he'd get to do about it because waking his wife up when he was horny was something that wouldn't accomplish anything but piss her off.
We laughed about that, and I just started rubbing my dick under water, making sure that he could see what I was doing if he wanted to. We were close enough in our friendship that I knew it wouldn't offend him, but I was hoping that he might do the same.
I was laid back and had my eyes half closed, but was keeping an eye on what he was doing and where he was looking, and I could see that he was paying close attention to what I was up to, and after a minute or two, he grabbed his own dick and started slow stroking it too, and then reached over and started the jets to the tub again so I didn't get to see more than a few seconds of his self-pleasure.
Neither one of us said anything for the longest time, and I finally broke the silence by blurting out that I really needed to do something about this problem I had.
All he said was "go ahead". I told him I'd already started, he just chuckled and said "me too".
This went on for the 20 minutes that it took for the hot tub jets to run their cycle and quit again. I had been slowly teasing myself, staying hard, but not making a concerted effort at getting off.
During this cycle of the jets, I asked him what the craziest thing he'd ever done sexually had been. A little more sex convo could only help, right? And, I was interested in knowing how wild he had been.
He talked about banging a nympho bitch on post while he was in the Air Force several times, and how his dick was long enough that he could still drive them wild fucking them standing up, face to face, with his uniform still on. He said there were times when he'd fuck her 3 or 4 times a shift, and once they even set a record of doing it 7 times and nobody ever knew.
I shared a few experiences of my own with him too, and all the conversation had us both stroking our dicks faster and harder in the calm water.
I don't know how much I'd had to drink, but all of my better judgement was completely gone by then anyway, so I asked him if theres anything he'd ever done sexually that he would never tell anyone else.
"Yeah" he said. "Me too" I replied.
The conversation switched from me running the conversation, to him suddenly being curious and asking me the questions first.
"Like what?" he asked.
I opened my eyes all the way and looked directly into his and just said "what's said here, stays here, right?"
"Absolutely" he said. "Dude, we're sitting in my hot tub buck naked and pumping our dicks, and you're asking a question like that?" and laughed.
Drunk as I was, I knew this was all between us, and nobody else would ever know, and that I could trust him completely. He also said that if I told him, he'd tell me his too.
I told him about the last day of my
Freshmen year of college, finals were over, and how a bunch of guys on my dorm floor started playing quarters and kept going well into the night. I'd eventually passed out, and that I didn't know what time it was, but I woke up to the sensation of having my dick sucked and was really enjoying it when I opened my eyes and discovered it was the dude from across the hall who was blowing me.
"No way!" he said.
I told him I was initially pissed off by it, but that it felt so good that I just laid there and let him do it, and that I actually got off from it. I also "confessed" that it was absolutely the best head I'd ever had in my life, and that I'd never been able to get that experience out of my head. (And that was a true story---I just didn't explain to HIM yet then that this was just one of many encounters with guys I'd had at that point in time LOL).
All he could say was stuff like, that's wild, that's crazy. He was still going strong stroking his hard dick, so I could sense that the story hadn't turned him off, which was encouraging.
"Your turn" I said. "You know my biggest sexual secret, what's yours?" I said to him.
"Kinda like you---in High School, the church youth group."
He started telling me about an all-night youth group lock-in at his church where he and a few other guys he listed off (I knew them all) had played truth-or-dare with each other in the middle of the night and how everybody ended up first showing off their dicks, and eventually sucking everybody else, at least briefly, and how it had all culminated with a circle-jerk to see who could shoot first, the farthest, the most, all that. He also told me that night was when he realized that, compared to other guys he knew, his dick was really big.
I was drunk and said "yeah, you are hung like a horse." All we could do was laugh about that.
"You noticed, huh?" he said.
"How couldn't I......dude, it slaps your thighs when you walk around naked"
He chuckled one of those proud chuckles, not disagreeing with me.
"She likes it, and so did every other woman I was with before I met her" he said.
The jets had been off the whole time this conversation was going on, and it had been long enough that I had to piss like a racehorse.
"I gotta piss" I said, as I stood up and aimed my hard dick over the edge and let it fly.
He stood up right beside me and did the same, and I could easily see in the moonlight that his dick had to be over 8", probably closer to 9", a good 2-3" more than my thick 6 incher for sure.
He was staring at my hard dick as we pissed, and I was staring at his. We were making our dicks bounce, and crossing our piss streams, and as drunk as we were, almost fell out of the tub doing it, and ended up falling into each other's arms to keep ourselves from falling over.
The sensation of his naked body against mine was just electrifying. Everything I had lusted for about him was nearly complete at that moment, we were naked, hard, and in an embrace, awkward as it was.
We stood each other back up, finished our pissing, and slid back into the water, this time, side-by-side in the tub instead of across from each other like we had been up to that point (he moved to the side I was on.)
I grabbed us another beer and we started talking about how fucked up we were, almost as if we were reassuring ourselves that we were drunk enough to not be responsible for what we were doing, or would do, before we actually did it.
I resumed stroking my dick with one hand while slamming yet another beer with the other, and he was doing the same.
"How was it-----getting head from a guy?" I asked him.
"Great----some guys were better than others, but it was cool. I still think about it, no regrets" he said.
By this time I'd been stroking my dick in the water long enough that it was starting to get a little bit irritated. I wanted to get off desperately, but I was hoping we'd somehow do it together.
By now, it was nearly 4 am, and it was going to start getting light out soon, which meant we needed to get inside before it was light enough for the neighbors to see us naked out there.
I blurted out that I needed to do something about this problem I had or I wouldn't be able to walk straight for a week.
"Me too" he said.
Then I mentioned how much better head was than jacking off, and that I was getting a little irritated from rubbing it so long in the water.
He didn't say a word, he just looked at me and stood up in the hot tub and stepped out (nearly slapping me in the face with his hard dick when he did) and finally said "lets go inside".
I got out of the water and helped him kick the empty beer cans away and put the lid on the hot tub, and we grabbed the rest of the beer we had along with our towels and went in the sliding glass door from his deck, through the kitchen, and down the stairs to his basement and into the laundry room where we dried ourselves off.
I was still hard. He was still hard.
He walked from the laundry room to the family room with his wet towel in hand and I heard him plop down on the couch, still naked. I followed him and sat down right beside him, and even though I could barely see him, I could hear that he was stroking his dick. I started stroking my dick too.
"You ever sucked a dude before" he whispered to me.
I lied, not yet wanting him to know I was bi, and said "no, but after that dude sucked me, I was so pissed I bent him over and drilled him in the ass".
There was silence for a few awkward moments. "That's nasty" he said. I acted like I was repulsed by anal sex too, and assured him that it was anger, not lust, that caused me to do it.
A few more moments went by, the tension in the air was excrutiating.
"Everything we talked about tonight is just between us, right? You don't tell anybody, ever, right?" he asked.
"Absolutely, this is just between us, forever bro" I replied.
I could sense he was nervous, his breathing was shaky, and it wasn't from him stroking his dick.
Somebody was waiting for the other one to make the first move, or make an offer.
Finally, he broke the silence.
"Suck me?" he said, more as a question than a statement.
I hesitated, not wanting to seem to eager.
Finally, slowly, I leaned over toward his cock, stuck my tongue out, and licked the head. He was flowing precum like a fountain. I swirled the head and licked it all up, and he grabbed the back of my head and drove my mouth down onto his cock until he had it balls deep down my throat and I was snorting from the sudden lack of air.
He wanted to do this fast and get it over with, so I obliged.
I licked and sucked his huge dick like I've never sucked a cock before or since. I slid off the couch and between his legs as he bucked his hips off the couch and literally fucked my mouth ruthlessly.
It didn't take him long to cum, and rather than a moment of indecision about whether he was going to cum in my mouth or not, he gasped deeply and pulled me down on him and unloaded it so far down my throat I didn't even taste it.
He convulsed with his eruption, panting heavily, drawing my mouth off of it and jamming it back in balls deep, until he was completely spent, and I could feel him start to go soft.
Absolutely every fantasy I'd had about this stud since high school had happened in that moment, and I could have died a happy man right then and there.
When he was finished, he released my head and I pulled off his cock and stood up in front of him.
I was still rock hard, my head was spinning, and I was precumming like I'd never precummed before.
"Suppose it's my turn" he said. And without hesitation, I sensed him moving forward on the couch and he took my cock all the way into his mouth and started returning the favor.
He knew what he was doing, and it couldn't have taken me more than 30 seconds to go off.
He sensed I was about to cum, and instead of taking it from me, he pulled off my cock and started jacking my dick, and aimed it at his chest when I started to cum.
I don't think I've ever cum so much in my life, and I could hear the spurts splattering on his chest. He milked my cock dry, and wrapped an arm around my legs to help me stand up because my knees were shaking so badly, and when I was done, let go of me and stood up with his towel and walked me to the laundry room.
I cleaned off my dick with my towel as he sat on the toilet and pissed. He looked at all of my cum on his chest, and started rubbing it all over his body instead of cleaning it up with the towel.
He was so bombed by then he could hardly keep his eyes open, but he did manage a "just between us---nobody finds out".
I agreed.
He finished his piss, and we both slid on a pair of shorts. He grabbed a blanket and gave it to me and pointed to the couch, and got a blanket for himself and plopped into the recliner beside it, and we both passed out just as it was starting to get light outside.
We both woke up around noon the next day. His wife and kids had left to visit her parents and left us a note.
Neither one of us said a word about anything that had happened, and I was starting to wonder if he even remembered.
Finally, he said "I need a shower" and winked at me with a grin.
"I need to brush my teeth" I said "tastes like I've been eating used pussy"
He laughed at that, and I knew that he recalled what had happened and I was happy that it wasn't an aberration, and that it wasn't going to affect our friendship.
We've gotten shitfaced, naked together many times since then, but nothing like this has ever happened since then.
We make wisecracks to each other with a certain hidden innuendo, but I've never sensed that he's been interested in doing this again.
I think it was something we both wanted, and needed that particular night, but I'm content that it may never happen again, and I'm fine with that, because I considered it an honor to share a night of complete and absolute trust with someone I consider to be my best friend in the world.
Hormones raging during those years... some straight guys would hump a tree at that stage. Reciprocation is totally off the table, unless he is more bi than you initially thought. 
