How to snapchat with my crush?

[Anonymous]

We started a streak after he got a snapchat because I wanted him to. We snap everyday now and I ask him questions but he doesn't always ask me them. During bio he always comes to sit with me and does group projects with me. Today I asked if he wanted to play 20 questions and after two questions he just stopped replying. Does he even like me? Do I have a chance? He is kinda shy, but I've known him for three years. Should I break our streak to ignore him a little? Play a little harder to get maybe? Any opinions would help! I don't know how to flirt at all, and snapchat is even harder!