Does a guy like you if he wants to sit with you at lunch waits for you after class and saves you a seat on the bus but won't ask you out?

It sure sounds like he likes you. Maybe he can't afford to pay for a date. You might ask him to go out if you can afford two movie tickets. Be sure to mention that your dad gave you the tickets. Then, you go buy the tickets. He also may be shy. All the places that you mentioned are public places where others are around.