Meeting and leaving people

Just met someone, had an amazing time with them and then they messaged me yesterday that they don't want to see me anymore. My question for folks living alone, how do you go through this and how often have you been through it?

Honestly I am not depressed or anything but just sad that it's gonna be so tough to find people in this city . Gimme your thoughts :)

Edit: This was a date btw, friendships are different, they are more like "let's meet up nextime were free bro" which takes forever sometimes