Would I ever want to share “my” woman with others? Probably not. But who am I to say she’s my woman ?
Just because I may have a piece of paper that she signed? In fact, the institution of wedding was created pretty much out of envy. Anyway, if you’re gonna cite a reason as to why “your” woman shouldn’t engage in coitus with other men, you should come up with a better and less offensive reason then “she’s mine”.
On the subject of anal sex, what’s wrong with it? It’s just another hole. Just another part of the human body. Is a girl who likes anal sex a slut? Why is it, that vaginal sex is perfectly fine and anal sex is sign of promiscuity? Who deems which hole represents what?