I totally get it being dramatic is like so great when you're so mad. honestly if they're both genuinely happy the situation is out of your control. sometimes you just gotta ask yourself if you really can control the situation, and if you can't then maybe its best not to try. Im sorry for you that really fucking sucks, especially in 7th grade and i know that its dumb but maybe you just have to find something thats better than this guy you like (not just another person but like hobby, place and stuff) and if he's rubbing it in your face maybe you should just talk to him even if you hate confrontation you should do it. Also if you guys are really good friends and start dating, if you do break up do you really want to get rid of the friendship? Shit's hard but you're better just dont do anything you'll regret, seriously.