If a guy asks a girl to go to a concert, is he interested?

His intentions aren't very clear. We flirt a lot but the last concert I went to, I suggested he go to it and he said didn't say yes or no, but it sounded more like he was leaning towards a "yes." So I go and he ends up not attending. I asked him why a few days later and he said, "I think he had something going on that night." And he asked when it was and I told him the night and he said, "Oh, actually no I didn't have anything going on" and sort of just chuckled it off. Uhh, okay? So then why did he ask me to this new concert? To be fair he didn't care for the band from the previous concert & this concert is one of his favorite bands. Could that have something to do with it? And I don't think its a pity invite because he asked me a little later on with a smile. It wasn't really apologetic and he didn't have to invite me if he didn't want to. Hah, sorry, I'm just so confused, and trying to analyze. Any suggestions? :)