After I build sufficient attraction and rapport with a woman, invariably the question comes up "what are you really looking for?"

My answer is, invariably, "I'm not boyfriend material."

Most of the time they'll call me out as that's not an answer, but it does (a) disqualify me, (b) establishes that I'm not here for dating.

It can be a bit polarizing, but because I've already built attraction, it's almost always a win-win situation.