Should i break up with my boyfriend???

i really like MY BF but i think i might like someone else that im really close to.....and he just broke up with his girl friend!!!!!but heres the thing i hooked them up and my bf i think likes mii cuz bc he messes wit her at skool all the time and mike is like so cute and really nice to me bc im having alot of problems at skool but trust im not a geek!WHAT DO I DO!!!!!! HELP!♥