Crush advice!!!

So there’s this guy in two of my classes and I used to have a crush on him. And I asked for his snap but we never talked. I moved on and started liking this other guy. But the other day (we’ll call him Tom, the guy I asked for his snap) anyway, he was kinda flirting with me and I flirted back and I have a feeling he’s starting to like me. Idk what I should do?!