Sorry another namechanger since this could make me very identifiable.
So I have 2 Dc with my XP age 7 and 5 and he has an elder DD from a previous relationship. It seems that there also two more children... One which I have no contact with and no real way of initiating this and about whom I know very little who predates our relationship.
The other however is a recent baby from it seems a fairly horrific relationship about a year and a half ago. And the mother got hold of my contact details and has been emailing me occasionally with the odd question - family medical history and so forth. XP is refusing all contact with her.
I suspect this is because he's now shacked up with a very nice lady and her son. Presumably doing his best to hide it all from her although who knows what she knows.
Anyway so my question is what to do here for my children? Do I tell them they have another brother and if so when! I suspect they're a bit young to process this. Their elder sister know I think as do a few friends since they met the ex girlfriend while pregnant.
It's all stupid drama and exactly why I left. Complicated by the fact that he is very controlling and flies into rages / does ridiculous things to revenge himself.