How do you know a guy likes you more than a friend? Please and Thankyou!?

What are some signs a guy likes you, this guy I like he's smart and kinda cute. He always smiles when he talks to me, he's always nice, he looks me in the eyes when I talk, he did accidental footsies(are desks were put together and he stretched his legs out and they toughed my feet and he was like oh sorry and he laughed a little). He put slime gunk on me during a science lab accidentally and we laughed, were science partners fyi. He always makes me laugh and he told me before that I make him laugh. On wed. he picked a piece of lint off my sleeve, and he complimented my shoes. Do you think he likes me more than a friend or just as a friend.