THE WORD JEALOUS, IS REALLY A COMMON WORD WHEN IT COMES TO LOVE STUFF, NOT EVERYONE CAN CONTROL IT, THOSE THAT CONTROL IT, STILL FEEL IT, BUT DONT LET IT SHOW....THERE BY KEEPING IT TO THEMSELVES, WELL LEFT TO ME, ITS BEST IF YOU SHOW I....BUT ITS REALLY GONNA BE BAD IF BOTH PARTIES ARE THE JEALOUS TYPES, ONE PERSON SHOULD BE, AND THE OTHER NOT.....AS FOR YOU, NEED TO WORK ON THAT...TRY TO CUT IT DOWN, START BY HAVIN THIS NOTION THAT ITS ONLY YOU HE LOVES................

jealousy sucks, your case sounds really rough too because you have let yourself open up to this person, you've put your trust there, going into a relationship is saying: ok you're what i want and thats it, and when that gets broken you fall so hard
the only thing i know to do is to take a step back and evaluate, if this person is treating you in a way that is gonna hurt you and won't change, than, lets be honest, is he really worth your time? it could be time to start moving on, which i know sucks to hear but what else can you say...

Yeah I totally understand. I hate the feeling of being jealous. Its so hard to deal with. That burning feeling you get from such small things as a smile or a comment to someone who isn't you. Oh just even now when I think back over some past relationships I still get that weird feeling. Out of all the forms are emotions can take... I hate jealousy the most.