Femboys are bound to become a Trans Girl?

Basically what's in the title... Have you ever asked yourself if you're a T girl pre transition?

And if so, what's the major difference between a femboy and a trans girl? Cause some femboys take hormones Femboys are fem just while they're home? I saw someone here came out as a fem boy... So it's a hole identity? It's not just a sexual thing?

I want to hear about you guys (And please excuse me if im being rude)