I need help...

Hmmm, I'm not too good at this sort of thing...

Well, when I'm upset I talk to my best friend, since she's the only one who ever undertands how I feel. So do あなた have anyone あなた could talk to? It might even be someone on Fanpop, so long as あなた are able to explain how あなた feel and trust them.
Also, why was your boyfriend jealous of your best friend? Is it something あなた can sort out? If so, あなた might be able to get back with him? I don't know.

I agree with everything chickencheese just said! Find someone, anyone あなた feel comfortable talking too. Can あなた e-mail your/a school nurse? As soon as あなた feel あなた can open up, things will start getting better, as long as あなた give your feelings and emotions time to heal.
Talk things though to yourself in your head. Look back on the 最近 past and think why your feeling the way あなた are and what can stop it. This used to help me. It may make things clearer.
Can I just say that, that boy was a prick! Forget him! Jealous is really VERY unattractive anyway!

All I can say is give it time. あなた may look back on this soon and see that it was just a phrase. Look to the future. In the meantime, focus on your good points a get them to 表示する themselves!

U need to talk to your フレンズ about this not us!!

well i think that yo boyfriend like yo friend but thats what i think talk to yo boyfriend about it and im sorry about all of this i hop u fill batter