Redoing it because I realized I didn't add a no option

Have you ever slapped your SO?

I ask because my husband and I have gotten into two pretty heated arguments and I've slapped him twice the second time he slapped back. Here's some context.

First time he put his hands in the air around my head aggressivly and he egged me on so I slapped him he didn't hit back. Second time two weeks ago I cursed and he hates that so he bopped me in the mouth and I instinctively slapped him and he slapped back. I know it's wrong to hit someone especially someone you've chosen to spend your life with and other wise our marriage is great we usually have little to no problems and when we do get heated usually we back track and fine a way to calm down. I was abused in a previous relationship he would head butt me and choke me and throw me kick me and so on also was abuse severely as a child I've been through tons therapy for it all.