<human>: It's still pretty early in our relationship and it's been less than a year that we've been with each other. My girlfriend has this close guy friend that she hangs out with. I shouldn't be bothered by this and I told her (and myself) that I'm fine with it. I should be. They knew each other way before I met my girlfriend and she has every right to hang out with him. There's no logical reason for me to stop her from doing so. 

However, sometimes it makes me feel left out or meaningless. She's been hanging out with him a lot recently, since I've been swamped with work. And whenever she tells me about what they did, it always sounds like she has more fun hanging out with him than she does with me. As a result, I've been getting a little jealous lately. Sometimes I wonder if she would be happier with him. I don't know what I could provide that this guy friend couldn't.

Can you give me the gist of the text in a nutshell?
<bot>: Girlfriend has a close guy friend that she seems to have more fun with. How can I stop being jealous about it?