This happened yesterday.

I went out clubbing with my usual group, and Friend A decided to bring a girl along, and specifically asked me if Friend B was present, who is known for snatching (taken) girls away.

I say no, she's his to pursue, we won't interfere.

During the evening I learn from him that he tried his luck with that girl 2 times already, and she rejected him both times.

After carefully asking the girl what the deal between them is, she told me he's 'just a friend', while rolling her eyes, then later told me she's not interested in him romantically.

I notice that friend A doesn't make any moves whatsoever, so I tell him that he should get to it if wants to make something happen, and ask him if he's sure that we really shouldn't interfere. He says no, we should keep off her.

The girl starts showing clear signs of interest in me, and before I did anything serious, I wanted to ask him again. He (now pretty drunk) tells me he doesn't care anymore, do whatever.

Alrighty then, I isolated her, and in order to not be a douche only made moves when I moved her and me out of his sight, etc.

Obviously he knew what was going on, but didn't say anything.

I took the girl home with me, which he also definitely saw, we walked to the cabs together.

He still gave me a brotherly goodbye, made plans for next weekend and didn't mention it today, but I could tell he was hurt by it.

Really not sure here. IMO it's fair game if the guy doesn't make *any* moves whatsoever, and the girl is clearly not romantically interested in him (she even told him that very evening, in a very polite way), but on the other hand bro code is bro code...

Very curious to hear your stance on this!