i know just how you feel. im 15 and school has NEVER been harder. my ex just split me up me and one of my closest friends. i did something stupid and lost my best friend and im even failing at school. but i realised that if i just set some time aside to think, i didnt have all of these worries swirling round my head. i could actually THINK! and i stopped doing stupid things, im not failing quite as bad and ive started to repair these broken relationships, but seriously hun, this guy is not worth it at all. guys that play games are just a no-go area, they can totally screw you over. and if you mean he was pushing you into sex - dont do anything your not ready to. seriously, i did, and i regret it.
hope it gets better hun,

x.