Never, I have honour and would never let a used roastie or a stacy use me. Fuck them, may all of them die. They denied us so we should deny them, get over it.
at least one of you needs to be reasonably into the other, otherwise a relationship cannot develop. i've been around pigs like you describe before, their interest is non-existent and you have to be the hype generator and take them all the way. i can't muster all that by myself and for a pig to boot. not gonna happen.