Idk what to do

So my best friend likes this boy in our class. He’s probably her best guy friend. Anyway, he randomly started taking to me last week. Whenever I’m waking to a class, he talks to me (we’re in almost all the same classes). She’s convinced he likes me, and I’m starting to believe her. If he did like me, I wouldn’t date him, but I’m still not sure what to do. I could never hurt my best friend, but I don’t want to hurt him either. Any advice?