Does this girl like me? Should I make a move? Should I confess my feelings?

How old are you? it sounds like she may like you, but may like the other guy too. If you don't talk to her about it you will never know. I say go for it! I wouldn't tell her you love her already. But maybe just see if she wants to go out to eat, or the park or something where you two can be alone. Good luck!