Who do i choose? please help asap?

i think im breaking up with my girlfriend for this girl Jess Miller. okay.. well i went to her game, i was really excited too. because Caitlin(bff) asked me to go. (on the same team) so now, i leave the room, she makes a shot, i miss it, & i feel like such a . & now im a distraction to her:'( i feel like such an idiot... jess wont leave my mind me and amanda are more touchy and hang out more. but i dont know if jess's feelings are real. WHAT DO I DO!?!? please help tell me how maybe i can solve this. thanks