WIBTAH if end a friendship because I'm better friends with their ex?
I have only known this friend (X) for less than a year and was introduced to her at-the-time boyfriend (Y) a couple weeks after we met/became friends. To make a long story short, I hung out with both of them pretty regularly until they went through a VERY messy break up about six months ago. I've hung out with them separately since, but hanging out with X kinda feels as draining as a part time job. She's always in crisis and seemingly refuses to do anything that would actually help her situation. She treats people like they're NPCs in a dating sim and is surprised that she hasn't found another relationship. I feel like she's constantly mining for information about Y because she knows we still hang out.
and I'm no saint I've been known to tie one on, but X DRINKS drinks, to the point where I've watched multiple occasions of her becoming an unreliable narrator in her own life and it makes me question her version of events if I'm ever too drunk to remember. she recently got banned from one of the bars that we would frequent and my first reaction was "oh thank god, a place I can go where X can't" and to put it mildly that made me feel like a fucking dick.
the catch is, I know she actually is struggling mentally and financially, she is constantly saying how she has no other friends and I'm one of the best people she knows. I don't want her to be more isolated than she is, but I'm really not sure I have the energy for her crises. it's gotten to the point where she has started showing up at my house unannounced instead of pursuing an actual solution to her problems.
so, wibtah if I created some distance from this friend? would I be an even bigger asshole if I stayed in the friendship, knowing how I feel about it and how exhausting it is?