Just an effeminate man. I don’t know if sexuality has much to do with it, but I’d say the majority of femboys are gay/bi with a minority being strictly heterosexual. To be real blunt, imagine the exact inverse of a tomboy, and you’re probably pretty close to a femboy. I like some p girly things, I like to wear skirts and dresses, but I also have a masculine side to me.

Boy in skirt. Often a half-closeted trans woman, but not necessarily so.