A woman could sleep with as many men as she wanted and still have self respect, she might not have your respect, or other people's respect, which is based on their own ideas of what is worth respect or not, but she could have it for herself.
Self-respect is based upon a perception of ones self worth. Respect for your mind, body and how you interact in society.
I'm not a relativist in that I think that society can have all sorts of different levels of 'self-respect'. Both men and women should respect their bodies and not sleep with as many people as they want.
Neither am I a totalitarian in that I think we should dictate that men and women should not be able to have sex with as many people as they want.
However, I'd rather live in a society in which sexual restraint was considered more worthy and reflective of one's self-respect than one in which women would 'sleep with as many men as they want'.
Have sex because you respect your partner, it is a consensual relationship and you wish to control your body. But sex for the sake of sex...I just don't get it. It's an emotional, spiritual experience. To debase it is to miss out on one lifes greatest pelasures. Making love should never be about 'how many'. Sex isn't a sport were you rack up points or try to get goals. It leads to objectification and dehumanisation. We are more than a penis/vagina.
Extremities are never a good thing. Sexual repression is just just as bad as sexual 'come and have a go' liberation.