I have really big jealousy problems when it comes to my girlfriend. I get paranoid easily too ._. The slightest things make me jealous and sad. Like if she's just not smiling talking to me on msn (it's long distance.. xD) and someone else comes and talks and she just starts having a ton of fun.. Or when she tells other people things but refuses to tell me.
Jealousy is a sign of insecurity. You are insecure that she will leave you. If you don't chill out she will. So just relax and what happens, happens.
Insecurity isn't necessarily the fault of the person suffering it. We don't know but maybe his insecurities are founded in reality, in which case they'd be a natural response to an unstable situation, pretty much the definition of long distance.
i am in the same boat...not long d but the msn situation you described happens regularly...
OP, I feel the same.
I had planned to catch a certain movie with my gf but a couple of her friends beat me to it and it's making me feel really crappy.