Me and my GF have been going out for about a year and I want to get her comfortable with us bringing in another girl, but I don't know how to approach her about it. I don't know what I should say to get her comfortable. I don't want to sound as if I want another girl, I just want to try something new.

I'm 18 and I recently got married a few weeks ago. Thus far we've been pretty happy and are also expecting our first child. A few days ago we had some friends over: his best guy friend and my best girl friend. I guess curiosity got the best of us all and I ended up making out with the girl... and then one thing led to another, before I knew it my husband was having sex with her! I was giving oral to his guy friend, trying not to cry and kill my husband and best friend! Afterwards they left and we were left feeling so empty. I know I'm not innocent but I just feel like him having intercourse was just WAY too much. Now that's all I can think about, and I'm so upset. I just really need some advice. I really dunno what to do.

I'm so used to seeing TV shows with the "bachelor" who constantly sleeps around and never has a partner, or the one who's looking for "the one" and falls in love and looses someone new every five episodes. And at school, I'm used to everyone dating for a week, then more or less switching partners, or randomly sleeping together.

My question is: How many partners do most people have in their life time? And do one-week stands count as a small relationship? How short can a relationship be, and how long can it before moving on and finding someone new becomes really hard? Can people be in committed, loving, polygamous relationships, or have different partners for different things (like someone else for especially rough sex you wouldn't want to subject a gentler emotional-lover to)?

I really want to have sex. But, my boyfriend isn't ready and he said I could have sex with my ex who left me because I wasn't ready. I need to know if i should or not?