I'm jealous of my gf
Why are you jealous of your girlfriend?
I don't like her other male friend.
You shouldn't be jealous of your girlfriend as this can build resentment and detroy your relationship. Instead you should talk to your girlfriend about how her other relationships make you feel.
I guess I'll get over it. I don't want her to know I'm jealous.
Are you sure? It's bad to let jealousy fester. It'll be much better if you admit this to her.