I think the issue is less having those thoughts, and more (usually) dudes not keeping them to themselves.

You shouldn't feel ashamed of them, that being said the idea of showing even a modicum romantic/sexual interest towards other women has always been terrifying outside of people I'm already in a relationship in, simply for the same fear of being perceived as a creep.

Like I can make the most heinous jokes towards the cishet men I work with, if nothing else because I know most of those fuckers are just as bad towards women. But the idea of giving even a platonic compliment on a women's choice of clothing feels intimidating.

I'm really hoping once I start presenting as a woman that shit will wash away, but who knows.