I have a HUGEE crush on a gay guy?

Ok so I've been friends with this guy since the end of 6th grade and at the time i didn't know he was gay and i didn't find out until the middle of 8th grade (im im highschool now). And by then I already had a huge crush on him i didn't know he was gay! But he is just so fun and easy to talk to and you can't tell he's gay as much as my other gay guy friends. I actually think im falling in love with him.. For awhile he didn't know if he liked guys or girls, that's the thing that gives me a small bit of hope! BUT he has a boyfriend who is also one of my best friends and at lunch when I talk to him i accidently talk to him the whole lunch like crazy without even realizing it and his boyfriend gets pissedd off at me. I don't know what to do i like him soo much. And I know this probably sounds really full of myself but I never really liked a guy who hasn't liked me back, I think it's because I make sure they like me first though but this is just so hard. I don't wanna do something stupid and make him all weirded out and not wanna be my friend anymore. Like im always hanging on his arm which is fine because his other gfs do that too but people who don't know us always ask if we're dating and I always joke around and say we are lol. But i don't know what to do!! Haha how do I get over this?
I have a HUGEE crush on a gay guy?
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