I really like this guy a lot, what should I do now that it is summer?

He was in my homeroom and sometimes I seen him stare at me a lot and I laughed at all his jokes, he also was in my other cl and he sat next to me a couple of times but we didn't talk and he also sat next to me when where on the computer, he plays lacrosse/football and he is really smart, whenever I seen him in the hall way he still looks at me a lot when where not in cl and also the theirs a bookshelf in the clroom so he looked over it and smiled at me- now it's summer idk what to do, I don't have his number or anything but my friend said that he's good for me