&gt;Peter is a good looking guy with a good job and he’s always making people laugh when we go out but behind closed doors he’s self destructive mean and **somewhat abusive**. I realized this only by telling my sister about things that I thought were normal (e.g. **he often slaps my hand or my head fairly hard when he’s frustrated about me doing something wrong**) 

He's not "somewhat" abusive, he's abusive, period. I'm so glad you got out before things got worse.

&gt;There was not artificial insemination he just had sex with her 

yeah.