Yesterday my girlfriend asked me?

Violence is never the answer. Then you would just end up in jail and how would that help? You can actually press charges against your partner/spouse if they transmit a life-long (or life-threatening) disease to you. I, on occasion, allow my anger to get the best of me but it does nothing but make ME look like the bad guy, get me into trouble, and make me feel guilty later. Let your brain do the work and save yourself the aggravation (and possible jail time) that follows when you allow your emotions to rule you. That is, of course, all hypothetical based on your hypothetical situation. Good luck! P.s.-Maybe that was not the best question for your girlfriend to ask you, you could tell her to not worry about the what ifs, as you never know your reaction until it is real, and concern herself with the right nows. Saves a lot of unnecessary worry....