I mean if you're worried that you're not looking at the situation rationally because of how stressful this last week was, which is a very valid concern for someone to have, then I would definitely say wait a week to come down from the stress and emotion, then make your decision. I say this so that in the future if you second guess yourself you know with confidence you left that insufferable self absorbed man child for good and rational reasons. If you don't want to wait that long if you ever second guess your decision, just come back here and remind yourself that just about everyone thinks you made the right call.

I could see his point a little if it wasn't a life or death scenario and your brother just got himself in a bind and just coming to you to bail him out instead of dealing with it himself. Even if your finances are separate the money and vacation would inevitably impact both of you as a couple. But thus was a life or death situation and any decent partner would think twice about supporting your decisions and would be trying to help you in anyway he could, not taking your phone from you and whinning.