That book, You and Your Gender Identity, by Dara Hoffman-Fox is an awesome book. I used to be in contact with them (Dara uses they/them pronouns) and I have an autographed copy.
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That is not true. Most experts agree that a person doesn't has to be bi or gay to have sex with a person of the same sex as them.
Ok then, lets just consider ourselves "super straight" case close if anyone like to argue "straight people still dates transgenders"
All in good time. Hopefully in the next few months.