I need help really bad with relationship problems?!

I need help really bad with relationship problems?

ok im only thiteen and i love this girl so much i mean ist is unexplanable i just could not live without her in my life and she has a boyfriend and he is cool but i get so jelous around them when they kiss and it makes me be a butt hole to her and i have to tell her sorry and that i love her each time i be a major a*shole and she is that type that will love and tell you that she loves even if you are just friends or boyfriend and girlfriend what should i do to cope with it please no retards answer this cause i only want serious answers

well, first of all y did u post in jokes?
well, if u like her u should talk to her in private, not in front of everyone. or write her a note, explaining pretty much what you just told us. girls like it when you tell them. but you need to not look too needy and clingy tho. also, it would help if you didnt act like a jerk around her and her b/f. if she really likes you after that, then good, but if not, she's not worth it.