"The past is the past, learn to let it go." Sorry, but past behavior is one of the best indicators for future behavior. Several studies have confirmed that men and women who have had less than 2 sexual partners before marriage have the happiest marriages and lowest rates of divorce.
There is a literal army of bitches who make Powerpoints all day for 40k a year. Absolutely pathetic that they pretend their time is worth more than that. I've decided that I will only date women in a similar career path to mine (even though engineering is a sausage fest).