What should I do to make this friendship a little more interesting?

Okay so me and my friend are ex boyfriend and girlfriend but now we're really close bestfriends. It wasnt until last month when we confessed our "undying" love for eachother. But now it seems Im the only one putting into this friendship like he doesnt want to talk to me like he used to and other stuff. How do I get him to chase after me like he did only 2 weeks ago?