So to start off I'm really confused of why my boyfriend wants to have sex with someone else.. he says it's just a curiosity thing, and we have plans to get married etc, and have been together for a while. He says that he just wants to know what it feels like and that he only wants it the one time and then never again.. i told him no at first but then he asked me to think about it again, and that I can pick the girl and can be there and even join if I want too. I just really need opinions on what I should do or how to go about this! positive and helpful comments only! Someone please help me!!