Guy's Behavior

For a moment I felt special but turns out he treats me like every other girl he had a thing with. What should I do?

So there's this guy at my school, we've been texting for a while now, he mostly texts me first, replies fast and we usually talk for a few hours, often till 3 am. Everything seemed fine, he invited me to go out together many times, so I guess he takes it seriously - I don't know if he likes me as a friend or hopes for something more. Anyway, after I asked him where we are going, he replied that 'I'll see', I started joking that I'm a bit scared and his answer seems sus etc and he texted me saying 'One girl thought I would drown her in the river somewhere, the second one that I would bury her in a forest so I see you all have something in common'... Maybe it's a regular thing but it gave me a huge ick - for a moment I felt special but turns out I'm not the first girl that he pulled his tricks on. Not gonna lie, I'm hugely disappointed, he did the same thing for every girl he had a thing with in the past. What do you think about this? Should I feel the way I'm feeling right now? We're meeting tomorrow and honestly I'm not sure if I like him anymore after these messages...
For a moment I felt special but turns out he treats me like every other girl he had a thing with. What should I do?
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