Would you be in one if you current partner or a future one said they wanted it or were open to it? There are many kinds and rules people use to make it work, some never sleep with the same person twice, some got a dont ask dont tell policy and things like that. Personally I dont think I could do it because I'd be worried that my (imaginary) partner would get pregnant with another guy or get a disease that she would then give to me. Also I don't get much out of sex with someone I dont have feelings for, feels almost just like masturbating to me. Though I will admit I dont got that much experience on the subject and I have never been in a relationship lasting longer than 6 months so never got bored of them physically. What say you Mayberry?