See my comments in the other thread. I don't think this is appropriate for the Battlebabe, as you might expect.
However, as a move I think it's rather interesting. A little bit... overpowered maybe? It certainly incentivizes using sex. Like, a lot. Like, it should be the special move of a playbook called The Whore, because hey, if you have sex, you have a dozen extra moves you can make! So, of course, you will (have sex, I mean).
I'm broke? I have sex and they give me free barter.
I need a +1? I have sex with somebody.
I want somebody to do something for me? I have sex with them.
I want somebody to know the secrets I cannot voice aloud? I have sex with them.
Perhaps it could be a bit more limited?
-- when you choose a special move for your partner, either they keep that same move towards you permanently
-- or all your partners for a session have that same special move, which you pick at the beginning of a session or the first time you have sex in a session
-- or you choose 3 sex moves at chargen and you only get to pick from those
-- or you can only choose from playbooks not being played in the game
Hm. Now I kinda want to make The Whore playbook.