I disagree with the 'play hard to get' scheme. This is just a mind game and it's just so unnecessary. It could back fire and really hurt the both of you even further.
It sounds to me like this guy is totally taking you for granted and he obviously doesn't see this relationship as worthy of the work needed to make it work.
If this is a bad as you say it is, and I was in the same situation, I would make a clean break. No more lies and excuses.
I did this very recently with a friend who was being very evasive with me and, in alot of ways the situation was the same (except that we were friends) until I got fed up with it all. I waited until I was rational and sent her an email (email is sometimes the best way to go because it is uninterrupted) explaining that I was not going to wait around for her.
It was polite and fair and it worked.