Not-femboy

This is someone who is not a femboy but has or had the potential to be one.
You would not just tell or say that someone is a not-femboy because thay are not a femboy.
You would typically call someone who is good looking in the cute way a not-femboy, not-femboy's typically have a fit/athletic or muscular bild to them.

"That guy is a not-femboy"
"Your such a not-femboy..... unfortunately"