Hi, sorry I can imagine this is really hard.
However, what I’ve learnt about abusers is that they’ll never truly be happy and they gain more experience of abusing in every relationship so if anything their next victim usually ends up getting worse treatment.
Even if they’re looking like happy families now, it’s the love bombing and the manipulation at the start. I bet his new victim will be in for it sooner or later.
It’s no suprise if he’s blaming you, trying to get sympathy from her and painting himself as the victim.
They’d only want him because he’s creating a false version of himself to lure them in x*x