Would you hate your sons girlfriend if she gave him love bites?

That all depends…how old are you? I would not hate her, but I would question the seriousness of the relationship. If you are too young for intimacy then I would discourage the relationship for fear of both of you getting too serious at a young age. If you are old enough (out of high school) then I would just think it’s a bit tacky. If you want to give him love bites in the heat of the moment I would do it in a non-conspicuous place. You don’t have to let the whole world know what goes on in private between you.