Go after the girl in the toilet

You carefully walk towards the toilet as to not draw any attention, and walk through the door. The place is covered in white tiles, a smell of bleach in the air. The sinks are begining to look a little rusty but are in usable order. Along the wall is a line of urinals, with a blue soap cake in each one. There's a series of bathroom stalls, and from one of them, the furthest one, the one with the big door for handicapped persons, you can hear shuffling of clothes, no doubt the girl that you saw enter. You do your best to sneak over there, and as you stand in front of it, you see that the spin lock is white. Open. You gently push the door, and take a peek inside at the roomy toilet stall.

The girl is standing in front of the toilet seat, her simple cotton panties around her ankles and her short plaid skirt held up with both arms, and you see a yellow stream between her legs that hits home. It's not a girl but a very girly boy! You breathe in suddenly, giving you away, and he half turns around, his girlish eyes wide, his cute cock clear to see. He stops peeing, but a few drops land on the stall floor. You quickly glance up and down his body, at his flat chest, a simple girlish face with eyeliner and faint lipstick, and shoulder length chesnut hair. He turns his body completely to face you, his hands holding down the skirt over his crotch as he yelps; "Aieee!" You're about to run out blushing, but he grabs your hand and pulls you into the roomy stall, locking the stall door quickly, as you hear the toilet door swing open, and a single set of shoes walking over to the urinals. You both stand there silent as anyone can possibly be, his hands still holding you, his body so close to yours that you can hear his shallow muffled breaths and racing heartbeat. Eventually whoever it is finishes their business and leaves without washing their hands. What an animal.

The boy breaks the silence, speaking in a girlish voice that occasionaly cracks. "No-one is supposed to know about this!" You reply with an 'eh?' and ask him to explain.

"Well uh, it's a little embarrassing... But I guess I should tell someone at some point. I'm a guy, but I don't feel like one, you know? So sometimes I disguise myself, I let down my hair and put on makeup, and dress up." He squirms nervously. "I found these clothes in a high school not far from here, luckily they were my size. I just... Feel more like me this way." You nod understandingly, and are about to leave when he grabs your arm again.

"Please, you can't tell anyone, I'm not ready to reveal myself like this! I'll do anything for you if you keep it between us!"

Anything?

"Anything."