<human>: Can you give me the gist of the text in a nutshell?

I've been dating my boyfriend for a year and a half now. He works at Chili's and in turn has lots of friends. I work at a hotel and have none. He's a natural flirt, even though he doesn't try to be, but tells me I have nothing to worry about. I have gone out with his 'crew' a few times and only feel like a fifth wheel.
Maybe its the depression or the insecurity, but it seems to me like he has more fun with them than with me. He makes the girls laugh in public more than his attention is given to me, and he won't know any of this is bothering me until I say something. For example, we were bowling, and I watched his every frame, but on my frame, I turn around and his attention is on them. I have spoken to him about this and he doesn't think much of it. He thinks I'm just being me, socially inept, and he wants to let me. I'm more worried about the other females than I am of him...
I bring myself to tears thinking maybe he's not at work and he's at their house (his gay friend stays with a single female friend, she has numerous single female friends), partying.
Last night, he wanted to go out. He didn't invite me at first, so I told him I'll just be asleep by the time he gets home. He finally asked me if I wanted to come out, and when I showed up, he wanted to go home.
<bot>: I want to let him have fun, but I feel like that specific fun nearly invites other girls to crush on him. What do I do, Reddit? Thanks...