REALISTIC

Okay so I bumped into some gay&lesbian story's and they've inspired me to make one of my own and the ones that I've read where about stars who aren't really gay so it wasn't to realistic ..I'm not going to use celebrities or anything like that because I find it hard to believe anyway my story's about a boy who's completely straight and has a bisexual bestfriend but he has no idea that his best friend is bisexual and it probably won't change the way he looks at him or the fact that he's grown feelings for him ..or will it?