Of course sex validates us. I would think it validates both sexes in the same way that having children validates some women - or perhaps those who can't have them would feel validated if they could ? No??.......
There are men who have never had sex because they are too shy or too ugly - by their own definition - and by having sex with a prostitute they feel validated as men.
It's what we are programmed to do - the bits fit together whether you be Straight, Gay or Lesbian
Sex validates. Yeah