It sounds as though you both enjoy the time you spend together, but you mentioned that you weren't dating 'seriously' - so you can only expect so much at the moment.

You also mentioned that he told you that he likes you , but have you told him how you feel?

Guys tend to be reluctant to make a move if there's a possibility they may be rejected/ or if he feels doing so may upset you somehow - if you want to move your relationship forward talk to him about it , or at the very least keep giving him hints until he gets the message.