My friends did not care. But once my entire university found out, I just want back in, I want to be treated normaly again. And on top of everything else the guy I liked found out that I liked him and now he wont talk to me

Now do you understand why I want back in?
I understand completely! Let me use an illustration:
When I started my university days at Oregon State, I slowly got to know people and make friends. I joined some clubs, hooked into various activities, and felt fairly content in my place. Things were kool and smooth.
Then the word got out: I was bipolar.
Suddenly people treated me differently -- some stopped talking to me, others got nervous around me, some didn't want to live with me (I was in a house with 47 other guys), some wouldn't stop asking questions. Almost nothing was the same; even workout partners got edgy!
But I adjusted. Some friends learned to adjust, some learned enough to be support for me, others faded from my life. Old doors closed, a few new ones opened.
And through it I found out that it was okay to be bipolar, that it wasn't a horrid mark of shame; it was something about I had to adjust my thinking for, something I could live with, even something I could make use of.
Obviously there was no going back, no matter how much I wanted it so no one knew, no matter how much I wished it wasn't so: the word was out, and that was that.
You're in the time right after the word got out. It's time to see who draws closer, because they understand the hard time, who draws closer because they like the more open you... who fades away because it freaks them, who runs because they think you're some sort of monster... who shrugs, like, "So what?" Old doors may close; new ones may open.
In a way, being gay is like having a disability, because it changes how society looks at you. I adjusted to living with a real disability, and the way people reacted to it -- you can adjust to this!
Be strong, dude.