Don't teach boys this either. I hear so many straights say “I can't hang out with the opposite sex anymore, my partner gets jealous" and that's ridiculously crazy to me. That is NOT a healthy way to show affection, that’s controlling. Jealousy is more often than not from personal insecurity and if you are jealous, that is NOT your partner’s problem to fix, it is yours. Talk with them and work with them. But telling someone who they can and can’t hang out with is abusive, plain and simple.