Hey Diana ... I know exactly how you feel... I get that way too, when I'm in a break-up... even when, deep down I know it's for the best... sounds like this guy has security isssues, which usually have nothing to do with you....
I wish I could come and take all your pain and heartbreak away.. but I can't... I just went through this myself.. I took me awhile to get over it...
You will feel better I promise, just keep yourself busy and Be around people that love and support you...
I listen to the CURE when I'm lovesick... he screams about this sort of things.. I like to sing out loud... this song to release the pain..live it ..feel it.. let it go.. here's my favorite song
http://www.youtube.com/watch?v=3l4q-zUgJTo
I wish I could just stop.. I know another moment will break my heart
too many tears..too many times.. too many years, I've cried.. over you ..over you ..over you