Ok, I have a crazy theory, bear with me until the end. Maybe, and I mean it, maybe Marcus Jones might be a bit of a phony...Yet he only managed to make them aggressive and horny while getting no action himself ... even from his own wife.
I don't think he thought his plan through very well.
Or she's already full of the stuff. Which could explain her... unwarranted affection.I don't think he would dare use it on his wife. Too many things could go wrong.