I'm sorry to hear your story, charmed, and find it quite unbelievable that your're parents have remained friends with this abuser, and how it was swept under the carpet.....if i was your father, i would have turned his Fluffing lights out straight away, as soon as i found out he was slapping you around, the Little Bustard coward.
You've now remarried and say you have a wonderful husband, so am really pleased for you.
You've turned things round for the best.
It must be hard for you to have your parents insisting to stay friends with this man, and with your children being in their teens should'nt make a difference to them for the * sake of the children" part.....they have your husband now as their dad too, but it would be interesting to hear how your children get on with your first husband now, and when he was abusing you, and whether he ever used violence against them.? I sincerely hope not.
Grasscarp, redcrx, and sara comments should all be heeded too, as they are looking out for the overall puicture and to keep peace within the family unit, so it is basically down to how you feel about it. Discuss it with husband, and as mentioned, maybe a GP or counsellor too.
Take care...please look after yourself and the best of luck to you, sweetheart xxx