I want you to fuck my daughter

[LupusDei]

A married cougar masterfully seduces a much younger lad (who may or not be married or in relationship himself), then demands him to fuck her daughter. Eiter as condition for the affair to continue (could be explained as plan to conceal and obfuscate), or even by pure blackmail.

What's wrong with daughter? Perhaps, she's exceedingly beautiful, but otherwise, everything you can imagine.

 

[AlinaX]

The daughter's got a boyfriend, but they've made a chastity pact and have never done more than use their hands. She isn't talking to her mom because she's disgusted with her infidelity. Plus, she nearly walked in on the two of them doing it one day, and she was pretty sure they were doing anal sex without a condom, and that's something her own boyfriend keeps asking to do, because anal doesn't count as real sex.

 

[AlinaX]

Or it's a future in which women have discovered a powerful magic that can be sourced from their own virginity, and this daughter uses her power for great evil. The mother is desperate to find a man willing and able to take by force what the daughter refuses to give. "Please, my love, you need do no more than break her hymen with your cock. Only thus will our people be free at last of her cruel tyranny."

 

[DarkSollat]

The daughter is a gorgerous nerd who stops playing video games in her room only to go to some cons.
However, the mother wants grandkids, so she hunts for guys for her daughter hoping one of them would fuck the nerd out of her.
Plot twist: the daughter spends most of the cons having sex with her fellow cosplayers.