You might have imagined, or they might have said it for real, but even if you imagined, that alone does not make you crazy. You are very worried about those two things and very insecure, and understandably so, and there is no shame in imagining, and not enough to call you "crazy". If you do not imagine things in non-sexual parts of your life, I would not worry about your being "crazy".

I have never been in the situation so I cannot help at all, but I just wanted to point it that there is no evidence that you are "crazy".