My SO told me years ago that sometimes she has homoerotic fantasies, not when she's dressed, but when he's in guy mode. I don't know if he's still having them, I haven't asked.

This worries me a lot though. I'd feel a lot better if she was having those fantasies when dressed, because at least I understand those. His fantasies in guy mode might be either an indication of transsexuality (TS and TS yearnings do not ebb and flow with the crossdressing), or repressed homosexuality. Do you think you might be TS or gay?