I'm not too thrilled about my gf reconnecting with an old friend
Is there any reason why you are nervous about this?
I don't want her involved with my friend.
You should be there for your partner. She can connect with whoever she wants to connect with. It's her life.
I know, I was just upset that she didn't connect with me.
You should try to be more supportive of your partner. If you think that she is not connecting with you, you can always talk to her.