in a relationship, men have their wants and needs and women have their wants and needs. imo, if there is a man that's satisfying a woman's wants/needs (caring about them, listening to their problems, making them laugh) then she is obligated to satisfy a man's wants and needs back. it shouldn't be forced, but it is owed in the sense that everything is a give and take and if you take you have to give. why should women get what they want fulfilled and when men want what they want fulfilled be refused? that isn't fair.
for example: say there is a guy that's been talking to a girl for a few months, discussing all her problems with her, making her laugh and showing interest in her. in this case, the women owes the man sexual satisfaction at LEAST once. why should women get their wants/needs fulfilled in the relationship while the man gets nothing back?
this does not apply to men that don't put the work in of listening to, being nice, etc with women and just expect sex without working for it. but if a man does work for it he is owed it. however society will tell you that the women owes you nothing no matter what the case or what you do for her. i think that's bullshit.