Lil Kinky...

So, I've been with my SO for over a year now. We have been learning a lot together and recently we have discovered that I am really turned on by getting slapped in bed. Not just spanked, or 'slapped around' a bit, but slapped in the face. We already knew I liked it rough and like being choked and spanked and a little light BDSM never hurt anybody (pun intended) but it is very new for me to realize this new "kink" of a sorts. I'm not sure how I feel about it, and he asked why I keep shying away from the situation when he does it. Like, it's obvious I like being hit like that in a sexual manner, but then I get shy because I like it. I find this entire situation strange for me. Maybe it's because I was in an abusive relationship and used to get slapped and hit a lot before, so now I feel strange that it happens to be a thing I enjoy in the bedroom. Or maybe I enjoy it because of my past. Who knows?