ugh. Jealous Guys...

I just dont understand guys...I care about my boyfriend so much but sometimes he makes it so hard for me to love him. Yes love..i think i love him but im not in love with him. There are some days where it hurts to be away from him..and others where i just want to be ALONE and think it would be easier being single. He is a really sweet guy accept he is SO jealous which is our biggest downfall. I am an extremely social and happy person so i talk to everyone. Male& female. However her gets really mad whenever I talk to anyone he doesnt know or regulate. which is rediculous. If i wanted to be with someone else i would be...I dont cheat. But i talk to so many guys that are JUST friends that he doesnt know about and would be livid if he did. I dont know how to make him see that what he wants from me is unfair. These people have been my friends for forever..and he has only been my boyfriend for 5 1/2 months. and i refuse to give them up b/c they have a penis. Today we were talking to 5th period i saw one of my guy friends who is a freshman..and i have known my whole life and gave him a high five..and my boyfriend got mad didnt say anything and walked the other way. WTF. who does that...he can be so immature. he also said if i didnt something "with other guys" at prom he would leave me...who knows what that means but if he leaves he is gone for good and isnt going to be with me anymore. I mean if he hung out or talked to other girls i would be jealous but would never ask him to stop doing it b/c i trust him when he says they are friends. Sometimes he is so dramatic and i feel like the boy in the relationship!!!! If anyone has any advice please give...I love him and dont want to break up but i cant be with him like this:( Is it worth it since im leaving and hes staying here? i just dont know.