He rejected me, why's he still contacting me?

Basically after texting/flirting for a while, I asked this guy out and rejected me. Well he said maybe but I took this as a no. A few days later he texts me quite late (over the weekend) asking what I am doing. Why would he do this?

I'm thinking it was a 'booty' call but my friend thinks it was to check to see if I was out and with someone else. I haven't replied, I didn't really know if I should what with him saying 'maybe'. I mean what kind of answer is that.

I thought if someone wasn't interested in someone they'd avoid them after declining them. I mean I haven't really spoken to him since, other than a quick conversation afterward that was just like normal, so he's had the chance to. Is he just pushing his luck because he knows I like him? he's told me in the past he likes me too, which was the main reason why I asked him out. I've never asked a guy out before but thought he'd likely say yes as he'd told me he liked me.
He rejected me, why's he still contacting me?
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