I think I've lost the power in the relationship

If you really valued G as a friend, really, why are you concerned about “power?” It doesn’t sound like you’re being honest with yourself.

I don’t know, I guess power is kind of a misnomer. It’s not like we had a power struggle or anything. I just feel like since I kind of acted like a bitch (something I haven’t done since I got with my current girlfriend) that I’m just as weak and pathetic as all the guys that acted the same way with her. I’ve known the girl for six years and I’ve seen tons of these guys act like major tools for her. I was at least able to pride myself on the fact that I never acted like that with her. And now I feel like our relationship might have this different dynamic to it now where I’ll always feel like she beat me. It’s stupid I know. Maybe I’m not giving her enough credit.

Have sex with B and then things will work itself out.

Wait, you might be on to something. He was never jealous when G dated other guys but when she dated B…he wants to bang his buddy! That’s why he feels weird. Hey, you’re queer bro. Mystery solved. Who says you can’t get romance help on an MA board. Next?

Yes as we see how well this all worked out in “Chasing Amy”

Get it on with ‘B’.

You say this -

but then you say this -

Giving her enough credit doesn’t sound like the problem.

the fact that you’re giving it this much mental mileage is the piece that suggests the above. Man the fuck up and let the cards fall where they may, you told her - it’s done. If she thinks anything of you and is your friend (or wants to be more) she’ll come calling if only to talk.
If not, then you’re better off because she’s neither a real friend nor anything more.

…and

Sensei approves!

Grow up, man. Relationships between friends don’t have power dynamics, otherwise they aren’t a real friend.

You’ve lost nothing, bro. There’s no competition. There’s just you, your girlfriend (and I’d be kinda worried about how she feels about this, since it suggests very heavily you’re interested in G) and two of your friends.

You aren’t like the losers who fawn over her, 'cause she’s your friend, and you’ve got a girlfriend, putting you way ahead of the losers (if you really want to be competitive).

Or, you know, you could ruin everything and try and get with G.

I’d be on G like a monkey on a cupcake, she sounds hot.

So you didn’t have a problem until she started dating B? It sure sounds like you’re nursing a bit of a crush on this guy!

I say follow Sophists advice and if that doesn’t work… Follow Lily’s.

Failing that, getting drunk would certainly be a plus!