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This particular man does not want to be settled or tied down yet- so he is playing the field, I suppose, but the ladies in question all want to get married and have babies as soon as possible. I'm wondering whether this is a universal problem; man wants sex, so he has sex with lady, who wants babies but he doesn't want to commit, so she has sex in the hope it leads to babies, but he is just having the sex as it's sex. Lady gets hurt, man gets sex. Simplistic I know, but I think that is what is happening here.