Dude this type of post is classic madonna-***** complex
It's a general issue which most men have and it's based on a huge misunderstanding about women.
Scenario:
Your seeing a girl, she's cute, definitely girlfriend material on looks, you spend a bit of time with her and she ends up having sex with you.
You later hang out and find she is interesting, smart and you really enjoy her company but still can't shake the idea that she's a FILTHY ***** and decide she must be a **** to have done what she did.. You don't believe that she made the decision to have sex with you on the basis of how much she liked you and decide that she must be like that with everybody.. Because of your negative social programming you proclaim to yourself that she is a FILTHY **** and resolve to only like women who make you wait in future.
This is classic MAN mentality and it's a real poison in society right now..
So what is the madonna ***** complex. Urban dictionary has a nice summary..
It's the seemingly conflicting desires that some (but certainly not all) men have for a woman who is experienced in the bedroom and unashamed of showing sexual prowess ("*****"), but at the same time a woman who is wholesome, clean and nuturing ("madonna"), particularly enough to not be branded a "****".
This concept is due to having a large population of sexually frustrated people (both men AND women) who were raised to believe that sexual activity or just being sexy is a dirty and shameful act, and a society where both men and women have been led to believe that women have to either be complete prudes or totally promiscuous.
Don't let this be you.. See sex for what it is, two people having fun and your relationships will get better as women realise that you will not brand them FILTHY *****S for ****ing you too fast. If you honestly asked any woman about her sexual history and you believe girls who sleep with men on the first night are all ****s, they would almost all be ****s to you..
Sex isn't something special to 'save' yourself for, it's a natural human desire and it's not something which should be connected with morality in any way. Your emotions are telling you that you like this girl, don't be an idiot and throw it away because she doesn't conform to your outdated and frankly fully wrong belief system.