Man attacking woman in game - should this be allowed?!

Is this because it’s specifically a man attacking specifically a woman? If so, I don’t think there should be exception like this when things get physical… no one should be allowed to lay their hands on ANYONE, but that’s what happens in life, and that’s probably why it’s a thing in the sims. 

I’ve forgotten so please remind me: when two sims break up, does their friendship meter go into the negatives? Sims with a negative relationship are bound to do mean interactions no matter the gender.