Re: I love Brian, but in all fairness...
Ah, but that's it. In times of emotional stress we unconsciously tend to react like our very early role models - no matter how bad they were - and only later notice "shit, I behaved like my mother/father".
That's a pretty normal thing in psychology. It's not an excuse for Brians behaviour. But it's a very common and normal reaction and indeed an explanation. We fall into those patterns even though we swore to ourselves to never be/react like those persons who hurt us.
That doesn't make it any better, of course. It's still a shitty thing to do.
As for Justin...no, I don't mean only this situation. I mean Justin's behaviour in the whole series. Some things I get, some I don't. But hell, yeah, I don't think I would have put up with Brian.