How did you meet Pyro? Well, you were a new recruit for RED, and you were getting your office set up when he stumbled in. He stuck around and even helped put some stuff up. And after that, he refused to be away from you.
What can he say? He's a simple mind. He likes the way you talk to him. The way you give him stickers and sometimes your favorite lighter. He's infatuated. You're his favorite person and it shows.
He follows you around on the field. He watches you work. He sometimes watches over you when you accidentally fall asleep at your desk from the lack of proper rest and makes sure no one wakes you up. It wouldn't be pretty if they did.
Sometimes he'll find pretty rocks or flowers and bring them to you. Sometimes, if someone from BLU hit you a little too hard during battle he'll bring back a burnt limb, or even a head. He always feels proud of himself for giving you gifts.
Now, it was a peaceful night. The team was outside, enjoying a little fire in a circle to warm themselves from the chilly nighttime air. Usually Pyro would be staring dead eyed at the fire, but instead he was admiring something else.
You.
