shewolf:
he should have told you from the start.
When should he have told her? When he first bought her a drink and looked into her eyes? Or maybe that was too late. Perhaps when they first glanced in eachothers' directions across a crowded room.
shewolf:
was he making you believe something about him that wasn't true?
He might not have explicitly lied. No-one tells their partners of everything they have ever done. He might have been fighting against his transvestite tendencies and hoping it to be a thing of the past. Or maybe it was something he only developed more recently.
Anyway, I understand it could be enough to shock the poor lady into becoming a lesbian, which would be even more confusing for all concerned, particularly when she takes all of his more manly looking clothes away from him.