Whenever he cancells our dates, Im left feeling like garbage

by Tisa
(Colorado)

I've been dating this guy for about 3 weeks now and i cant tell if he really likes me or is serious about getting to know me, even though he says he is. I feel like his actions tell me differently.

So far, we've gone out together three times. Once to dinner and a movie alone, once to the movies with one of his friends and another time we rented a movie and watched it alone at his house. We had a nice time all three times.

But, besides these three dates, there have been two other times where we have made plans to hangout together one on one where last minute he's called and cancelled on me.

Once because he was tired and just didnt feel like going out and once because some of his friends invited him to go out that he doesnt get the chance to go out with too often, so he called me and cancelled our plans and told me that i was welcome to join if i would like. I declined.

I'm so tired of getting my hopes up by him breaking plans with me that its gotten to the point where I have to ask him to promise me now whenever we make plans to hangout.

What is going on!

Why does it seem like he keeps cancelling on me?
Is he even interested in me? Am i over reacting? What should i do?