Antonia, when he does this in person :

CALMLY turn around and walk away.

When he does this on the phone :

CALMNLY hang up the phone

I am 100% on side with puppy here, yoru H is TRYING to HURT you here and you are handing him the stick... STOP TALKIGN about it...

He is an ADDICT and you CANNOT ARGUE him out of the affair.. don't even TRY, it just STRENGTHENS his resolve