How do I stop myself falling further for this guy I haven't really spoken to?

[Phoebe]

So I'm nearly 15 and he's 16. He used to go to my school and lives in/near the village my dad lives in, and now goes to college in the city I live in. He's in first year of college and I'm in year 10 (second to last year of secondary school).

So I got sent home from school because I kept fainting. I got the bus from the town I got to school in back to my city. He got on the stop after where my school is (at the village my dad lives in). When he got on he looked at me and smiled. I was sat with my feet on the chair next to me, facing his seat on the other side of the isle, listening to my music. When I looked up from my phone he was looking at me quite a few times, we have eye contact and then I looked down again.
When the bus stopped, he got up and bumped his head. He looked straight up at me embarrassed and did this funny little cheeky grin. I did a little smile back.

We are friends on Facebook but I've never spoken to him and he's really popular and older than me and I just can't talk to him, he'd think I was so weird and it'd be strange! I can't stop thinking about him though!!

Is there any ways to stop thinking about him?
Also is there any way of getting to know him without just messaging him?

*me and my friend share an account. I'm single and she's got a boyfriend so that is why there are different kinda of questions! *

[Wascally Wabbit]

This will sound silly but you need to occupy your free time. Find a hobby, sport or a club to keep you busy..