He had been messaging me on Facebook for a few months wanting to hook up, what's the deal?

So after months I agreed, spent most of the night at his and we had sex for hours, the usual between sex making it out he wants to see me again blah blah blah. I went home in the early hours and texted him next morning telling him I had a great time.. He said he had too, now week later he's not contacted me at all..

Why do people do that make out they want to see you again when in truth they don't and be honest it's just a hookup and be a 1 time thing. I've made the mistake before reaching out to a guy who did the same thing and he wasn't into me, so why lie? absolutely head messing crazy.

He had been messaging me on Facebook for a few months wanting to hook up, what's the deal?
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