I like a guy in my school, but I'm not sure if he's gay

I'm in a rut. I'm 16 and I like this guy. But I'm not sure if he's gay. I'm not out yet so I'm not gonna risk doing anything. But I really like him and I can't stop thinking about him. Eventually after talking we became friends and we talk but all we are, are friends (we only talk in school and text occasionally but when I talk to him it just seems different). Which I thought would be the second best thing. But it just makes me want him more. Any interaction with him is like a drug and I can't stop thinking about him. It's weird. I've never felt like this before.