Yes, I think someone could be curious forever, the only thing with that is that they are actually only trying to fool themselves.
I think you said it perfectly, after a few times, you are either one or the other, and if you have another go, then I guess it's pretty clear which one.
LeeEC could have something as well, but Bi-Friendly is (to me) still Bi . . . or maybe just downright greedy, hang on, that kindof sounds like me . . . . greedy!!!!