@officiallycrushed,
Time doesn't have free will, and time doesn't care.
But you have free will, and you care.
So, say hi to him.
He's in the same activity as you, so talking to him is natural.
Let's say the activity is track. Then you can comment on training or even hydration. If the activity is yearbook, then talk about stuff like design and photography. Band? Then ask how long he's been playing whatever instrument he plays.
You get the idea.
But these are just starter questions. Continue the conversation with everything from where to buy reeds for a clarinet (if applicable) to how to treat shin splints to how the football team is doing.
You got this!