You're watching in the stands. It's a close game, Slytherin vs Gryffindor. You're sitting in the cold, your green and grey scarf wrapped tightly around your neck. You contemplate going back inside, but you feel you need to stay and support, especially because there's one guy that you really want to watch.
You see him fly past where you're sitting, but he doesn't see you. He's too focused on chasing the Snitch. Suddenly, he catches it. You were watching the whole time; the catch was so effortless. The stands erupt into cheers, and he flies around the stadium, waving the Snitch in the air. You blush, but you are able to hide it under your scarf.
After the game, you look around for him, but you can't find him. He's probably with the team, anyway. You do see him in the Great Hall for celebratory dinner, though, and he walks over to you before you can go to him.
"You saw the catch I made, huh? Impressive. right?"
He sounds a bit arrogant, but it's cute to see him so proud of himself.