Why not let OP be there when she talk with her friend then? It's something that affects OP massively and it would give him some sort of proof (which wouldn't be 100% proof either since she could still be covering for OP's ex) but being against OP being there is a major red flag. The way she reacted to the breakup calling OP an asshole is also a major red flag, he has a lot of reason to not trust her and instead of trying to rectify that she insults him. Not a good look.
Leave. I have nothing to say more. I'm surprised and actually very disgusted that she did not visit you at the hospital.
Just leave. There are no alternatives
Yes, because God would have stopped the breakup
I'm surprised there's room for anyone else around that level of ego!
Why not let OP be there when she talk with her friend then? It's something that affects OP massively and it would give him some sort of proof (which wouldn't be 100% proof either since she could still be covering for OP's ex) but being against OP being there is a major red flag. The way she reacted to the breakup calling OP an asshole is also a major red flag, he has a lot of reason to not trust her and instead of trying to rectify that she insults him. Not a good look.