Most Helpful Guy
YES!!! ASK HIM! Confidence is awesome in a girl. You obviously like him. Dates are AWESOME! asking someone on a date is saying " Hey look, I like you, I think you're awesome and I think there may be something here between us. I'm opening my self up and i'd like a chance to find out." Dating is the first step, other than friendship of some kind (which you have) to possibly forming a relationship. Asking someone on a date also has the power to keep you from spending (what seems like) an eternity in the friendzone trying to read between lines and getting confused. By asking someone on a date you get an immediate answer of "yes I see the potential lets try it" or "sorry I don't see you that way". BUT! either way, by having the confidence to ask you are putting YOU in control of you're life and emotions. Not getting strung along at the mercy of someone elses actions who may be oblivious to weather or not he should take the step. even if it's a no, feel proud you have the confidence to grab life by the horns! So... Totally do it!
Most Helpful Girl
If someone told me that, I would say yes, he was totally implying that you both should go together. He was telling you he's free on that weekend. If he wanted to put you off, he'd have said he was busy with practice. But this guy is taking the time to meet you even last minute.
I feel both of you are getting along well, so take it further. Text him, or ring him up, or if you meet him again, ask him. "Hey, you said that you might be going for that movie, you wanna go together?"
The more you go out, and talk, the more you'll know if he's interested. And like that guy said, being in control and assertive gives you better chances and better answers. :)