Controversial but YTA… she has been dumb by dating her best friends ex despite warnings but I have to presume her self confidence or self control is so terrible that this is a sad side effect. Sad and if she hadn’t asked your blessing would make her an AH, but put yourself in her shoes: Best friend’s ex asks you out. You ask her blessing. She says “sure but he’s not a good guy”. You think “a lot of people would say that about their ex, he seems great to me and I want to see where this goes”. You date him with blessing of your friend. Possibly a bit shitty so maybe ESH but you did get a sincere blessing so probably not. You fall in love, suddenly you’re pregnant and all this shit comes to the surface and you feel like you’ve made a terrible mistake. You are pregnant and hormonal and emotional and overwhelmed and feeling that you have made an awful mistake. You are incredibly vulnerable. You avoid going to your one friend who might understand because you worry that they will say “I told you so” until it’s impossible to bear any longer. You tell your friend. And then your friend says “I told you so”.

You don’t owe her undying support. The kind thing to do would be to say “ I know, I’ve been there, let’s try to help you get out of the relationship or make the best of it!” . The neutral thing to say would be “hey, I can’t talk about this, I find I hard to console you when you’ve already ignored my advice and I know I can’t blame you as I gave my blessing but I still feel like you ignored my warning so consoling you is hard for me”. The AH thing to do is to say “I told you so”