You're very young and you're cute and you're going to have a wonderful life with lots of men pursuing you. Let this one go.
I don't know him or you or the situation but I'll tell you what the other side might be like.
When I was 30 or 31 I was heavily involved in AIDS support stuff. One of which was going to schools and giving safer sex workshops. I gave tons of them. At one college I met a
Freshmen who was very cute and sweet and took a liking to me. He asked me out, gave me his number, I told him it wouldn't be right. He called me several times at the AIDS project and left messages, to the point that it became kind of a running joke, the 19 year old who had a thing for me. I didn't return his calls because I didn't want to encourage him. Then he took a bus from his school to the AIDS project to see me. I wasn't there but he spoke with a couple of staff members. When I showed up that afternoon the guys deluged me with envy and excitement, couldn't believe I hadn't returned the kid's calls. "You HAVE to call him!" He really was very good looking and had an adorable personality. So with their urging I called him and we went on a date. We had a great time and I thought well maybe I was wrong. We went out again. And again. It was fun, silly, totally in the moment. He was a terrific guy, smart, cheerful, curious, adventurous. Great companion. We didn't talk about my stuff or his stuff, we went out and shared whatever happened as it happened. We slept together. That was great, too. But after a few weeks I started to feel a little more uncomfortable all the time. Eleven years is not a big gap. When I was 29 I dated a guy 22 years older and barely felt it; but those particular years, between 19 and 30, is an era. I really had nothing in common with him. I had to break up with him because although I enjoyed his company and sex was wonderful, we were in totally different places in our lives, and when he talked about his concerns or I talked about mine we were in different universes. That doesn't matter when you're surfing or having sex, but eventually in a relationship you have to talk -- or anyway I do -- about what's inside. What I'm saying is those particular years, late teens to late 20s, is a period of huge change and it's rare that coupling --a real relationship-- can work between guys at the edges of that span. When you're a few years older, I hope age difference won't be an issue for you --as it seems to not be today-- but right now, well it's probably best if you find guys closer to your own age.
Maybe that's relevant to your situation and maybe it's not; I wrote it for you in case it might be.
Good luck, and as I said earlier, enjoy the memory of that wonderful first sexual experience. You're off to a great start; try not to let disappointment interfere too much.