1: Do you guys talk? (In person, texting, social media, etc.)
2: This one is simple. Are his pupils big or small when you guys talk?
3: Do they have a girlfriend/boyfriend?
4: Do you catch him staring at you a lot?
5: When you see him (or text or whatever) does he seem nicer each time?
6: Does he ever find an excuse to touch you?
7: Does he smile a lot when your around?
8: Ok, last question. Do you think he likes you?