Are these valid signs that my coworker likes me?

-asks me questions about myself, school, career

-tries to talk to me when I am passing by, or acknowledges me.

-tells my other coworkers that I am really sweet

-he’s funny! he tries to make me laugh. He smiles at me.

He is also really friendly, and not just friendly to me. He is friendly to a lot of people. I am bad at taking hints. What should I look for if these aren’t valid signs that he likes me?
Are these valid signs that my coworker likes me?
Post Opinion