When a man during a young relationship really wants sex, but the girl does not. However, the girl wants to make the guyhappy and let's it happen anyway, not enjoying it that much herself.
I really liked him, so we had some forced pity sex so we wouldn't dump me for a whore.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi