AITAH if I can't be happy about my friend's pregnancy?
One of my (F35) oldest friends (F34) recently told the friend group that her and her longtime boyfriend will start trying to get pregnant this year. I know that she loves him and has always wanted to have kids (probably more than one) and due to her age, duration of the relationship and financial situation (both have good stable jobs), this announcement didn't come as a surprise.
I don't trust this man and find him to be a bad partner. A few of the things I base this on:
once left her out of the blue because he "had no feelings anymore", then got back together after 6 weeks.
while she was on vacation, he ended their rental contract without talking to her, because he singlehandedly decided they should live apart again
while she was on another vacation, decided they should move back in together and looked for an apartment before bringing it up
moved hours away for a new job (basically the same he had before) whilst fully aware that she would have trouble finding a job comparable to her current one in the new region of residence
no interest in our friend group, makes us feel like intruders every time when she invited us to their home
our friendships have drifted apart, because all of us (including her) avoid all topics related to her relationship
Apparently, the pros in the relationship outweigh the cons in her opinion, as she decided to stay with him and even start a family.
AITAH for not being able to be at least a bit happy for my friend's journey to motherhood? Or am I even the asshole for not bringing up my worries in an open conversation (even though I'm sure she suspects my thoughts, cause she knows my views on what I consider a healthy relationship)?
TL,DR: friend wants to be a mother, but I'm worried and critical about the chosen partner: AITAH for not being happy for her, but also not stepping in?
Edit: just to be clear, I might not be happy about the impending pregnancy, but I'm neither ending the friendship nor starting trouble in any way, because I want her to still be able to turn to me, if she ever wants to talk or needs help.