FTM but I have feminine mannerisms?

There are many neurotic and socially awkward males in the world. You don't have to be Arnold Schwarzenegger or Chuck Norris to be a boy. Plus, you were born in a girl's body and were raised to be a girl, so it's kind of like brainwashing in which some of the 'symptoms' of being a girl are still with you. Your gender therapist isn't an idiot, lol. He/She should be able to tell the difference.