With all due respect, Lela, if the Driver is attracted to females, then why don't you simply say that you are "female-attracted". This would be accurate, wouldn't it? And you would not be defining yourself as a male in the process?
If you have a male body and you live your life as a male (if the people around you have no idea, based on your presentation, that you are not a male), then people will indeed scratch their heads when you tell them you are lesbian. You're taking a word that has a specific definition that is understood by the vast majority of people and you're applying your very own definition to it. Doing this is the same as deciding that from now on, you'll be calling the color green, "orange". You can insist that grass is orange all you like, but people will not believe you.
But, you could certainly describe yourself clearly by saying, "I have a female gender identity even though I have not transitioned, and I am female-attracted", without compromising yourself.