Cancelling date - is this playing games?

I've been dating this guy for only 2 weeks. We've had 4 dates and it's been really nice and I am falling for him hard and fast. I was talking to some friends and have realized that I am probably "showing my cards" a bit too much, telling him how much I like him, etc. We have a date scheduled tomorrow evening. I am thinking of telling him I can't make it just to see what he does, like if he wants to reschedule or just doesn't care, or what. But I HATE the idea of playing games instead of just talking with him like an adult! What do you think, should I just go on the date, or should I take this opportunity to sort of test out his feelings for me and how much he really wants to see me?