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)?

My girlfriend and I have been dating for over a year. I have never loved or felt this way about a girl. We have been sexually active ever since we started hooking-up and dated. She has the ring, and I like not having to use a condom. She is the first girl I have never worn a condom with though. At first I could last 15 to 20 min of intense intercourse and now I last 5 min tops. Why am I doing this? It also seems to turn her off and worries her sometimes cause it's not as long. I always get mad at myself and want to go again like I have something to prove. Am I doing this to myself? We do other activities and she and I both love it, I get her to come and orgasm (sometimes) but when we do this it turns me on so much. Could this be another reason why I go so fast?

I saw this statement that one of the sexperts named Heather had replied back to a question, and I was wondering how it could be true the statement was the following:

A woman being a virgin -- if, by that, we mean has not engaged in any kind of vaginal sex before -- doesn't necessarily make any difference in the size of the opening since intercourse/vaginal sex doesn't permanently change the genitals in any way.

The last part is what I don't get, I dont understand, I've had sex roughly 20 times, and I can DEFINALLY see a diffrence from when I was a virgin, my whole genitals have expanded and are loose and there's A LOT of room up in my vagina now, before I could only get a finger if that much. AND also there are claims that people who've had alot of sex are more loose, compared to people who haven't had as much sex are more tight. So, to me this statement is VERY confusing cause to me it is very untrue considering my whole downstairs is permently changed. Please Help!