He probably likes you. And it could be many reasons he is doing it. Men are phobic of women controlling and using/playing them or wasting their time. So, a lot of times men want women to chase them. Second, a lot of women subconciously walk away from men who chase them back or tell them that they like them. So, he maybe trying to keep you interested because he likes you. Chase him and see what happens. But, don't get overly involved too quick because it might drive him away or worse, make you vulnerable to being played. So, yes chase him but preceed with caution. Both women and men alike play these games. At the end of the day, these games are just about judging someones interest and trust and honesty.