Dear Clint
I am 19 years old and male. I can imagine what you are going through. Nevertheless I would suggest a different approach. In my opinion you shouldn’t try to control your feelings nor should you burst in anger or jealousy. These feelings have a root and unless you can find that root you will never be able to completely get rid of them. I recommend boosting your self-confidence (not saying that is the issue, but it couldn’t hurt). I know what it’s like to be on the receiving end of jealousy. It was very unpleasant for me, although some people like it and seek it. Have you talked to yoir girlfriend anout it? If she has chosen you, she has chosen you for a reason. She hasn’t chosen that guy at the bar or the other one at… Jealousy csn be quite suffocating for some people and unless she is okey with it or forces it in some way you should look for the aforementioned roots. Last but not least you shouldn’t worry about it much. Seldom does worrying help.

Best regards
Momchil