masdog
What is the airspeed of an unladen Swellow?
Like this?^^^ I mean, look, I made that up in <5 minutes, and I realize it's very corny. I'm not saying that's how I'd actually write such a scene with more time, but at least it addresses what happened at the end of XY. There's set-up for a budding romance as they grow older.
https://forums.serebii.net/threads/an-amourshipping-one-shot.685619/