What's his deal? Sexting, but not making plans to meet up, he says it's complicated

I met this guy a couple of months ago in a club, we made out, flirted, ... He didn't give his number nor asked mine, he just said his name and that he had twitter. So two days later I followed him on twitter, he followed me and we started chatting there, quite sexually, but I didn't mind at all. He asked my number and texts me on what's app now. Not sexual all the time anymore, just random stuff as well. I told him he could text me (like normal, not just what's app) he said he thought what's app was easier. He keeps on sexting, which I really don't mind, but we never talk about meeting up or actually doing something, then he told me everything was complicated and blah blah blah... I know you guys can only guess and I can only know for sure by asking him, but I don't feel like being the serious girl who wants to do all the effort -_-
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Now he asked me to hang out when he's off work and he's texting me normal (as in: not on what's app...well, still on what's app but just a regular text two days ago, lol)
What's his deal? Sexting, but not making plans to meet up, he says it's complicated
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