Tinder guy suddenly stopped texting me?

ladyly
I met this guy on Tinder who seemed really keen on getting to know me as a person rather than just hooking up with me. We were texting consistently for the past 5 days. I would reply hours later due to studying for exams and he would reply instantly, so I know I wasn't being clingy.
Then on Thursday he suddenly stopped talking to me. Here is our conversation up until then. Can you tell me if I said or did something wrong?

Me: Are you Persian or Italian by the way?
Him: Persian. Every Persian wishes to be Italian though, so I take that as a compliment :)
Me: Lmao, but don't Persians excel in tae kwon do, soccer, wearing cologne, and getting 4.5 GPAs?
And Italians are pretty bomb. I'm studying abroad in Florence in the fall.
Him: LOL where did you get that stereotype from? *laughing face* And Wow, Firenze is Dope !
Me:Sorry, sorry, excuse my political incorrectness. The only Persians I knew about before coming to America (I'm foreign) were those of Cyrus the Great's Achaemenid Dynasty. So I googled Persian and thats what came up. This Persian guy told me it was accurate.
Him: Hahahaha. To be honest, we haven't come too far since then lol
Me: Lmao! I'll have to see that for myself. You still haven't told me what you want to do (for our date). I have ideas beyond movie and dinner, but I trust your judgment more since you're from LA

And this was three days ago, and he hasn't replied. He usually gets back to me within an hour, and he was so enthusiastic about wanting to see me soon!
Did I mess everything up?
Tinder guy suddenly stopped texting me?
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