I wouldn't call it petty, for me it's always the disappointment when you know that you put more energy and thought into something and others don't return it.

I guess that no matter how frustrated I get when I'm in that situation, I try and remind myself that just because the other person doesn't return favours or act with the same level of integrity etc, that I'd still feel guilty if I used that for a reason to treat them the same way. So what I take out of it is that yes, perhaps I don't have to go above and beyond for someone if they haven't done the same for me, but I like knowing (and the good feeling vibes!) that I've been the bigger person - because at the end of the day you acting the same way doesn't ever change how they will act in future.

Does that make sense? I'm not sure if it's helpful or just a whole lot of pregnant lady rambling - which I'm noticing with alarm I'm starting to do a bit, and I'm only 13 weeks in!!