Ok, I'll bite.
How hard is a slap? A full on open handed slap? I've had one thanks to my X. It hurts. it leaves a mark. for a while.
a full on punch in the face, dealt by a man, can KILL. A slap? no. doubt it.
A REAL man, no matter what kicks off, never raises a hand to a woman, and certainly never full force, fist, roundhouse.
I hit X once or twice, but the verbal abuse, harassment and torture that lead to it was too much. I should have walked away, but when you are in that kind of atmosphere, you can't., it's terrifying, being trapped like that.
No, I shouldn't have slapped my X, OP shouldn't have slapped her STBX, but a full punch? That evil bastard knew what he was doing.
He will KILL you ash in the end, unless you get OUT and stay out.
Freedom programme is AWESOME, really good. please try and get on a course asap, please let the police help you and protect you.