And if the girl is willing to do it because she loves her partner? Is it demeaning to a guy to reciprocate?
And you're right about parents being unfit. To say that that's OK to their daughters is very unfair to them, and helps those daughters to devalue themselves greatly.
Little Jenny, let me talk to you about oral sex and swallowing semen. Don't. do. it.
You mean, if you 'care' about a guy you've known at least three months. Go ahead. Give him oral sex. He won't complain, unless he really cares about you.