Well...kinda weird story,but paradoxicaly more normal than it seems. Anyway, I still don´t understand your feelings for him now..do you still have a crush or it just vanished when you realized his real gender?.
I don´t know what´s convenient to do. I´ve suffered from an experience similar in a way: a guy that I usually chatted with (in the main room of a chatroom) turned out to be a fake...his age,life,country,etc was a lie. I don´t even know who is he these days. I keep chatting with him,but I try not to take seriously what he says. But at moments it makes me feel absurd...I feel a fool pretending with him (when we both know that I know the truth). Anyway, I think if someone does that,he may have a problem.
But it´s up to everyone to decide what to do...the important thing is feeling happy with the decision you make. Greetings