My friend and my gf became really good friends after i introduced them. The guy is my childhood friend and like a brother to me so I'm not too worried about "cheating ".

But he has this thing that every time we hang out he likes to be the alpha male and im more on the chill side ( beta or a bit submissive or follower whatever..)

So he is always grabbing her attention and her friends and I'm just sitting around bored out of conversations and attention.

After our last hangout i got really pissed off and the next day i told her about it but i was really emotional and kinda accused her that he acts that way around her to get her attention and that he might like her more than just a friend.

She thinks I'm only being jealous and weirded out about how i can think that there might be something going between them.

Anyway I'm over it now I'm not going to be mad at someone for being themselves even though i can't handle it but that's who i am and my fault.

I just want to win her respect back she probably sees me now as an insecure pitty man and that's not good. The spark is gone and she barely wants to sleep with me

Edit: it's a serious relationship we are mid 30s , friend is 30