Jimyolo

Hello everyone, I'm planning about moving to Berlin soon. I wanted to ask about some things about social life there, making friends, dating scene etc. I'm an extrovert and I'm learning German (they're not perfect yet), I've heard that Berlin is a city that never sleeps but I've also heard that German people are a bit cold. Why do you suggest? Also, how about women? Do they like Mediterranean men? Would it be a good idea to make a social circle with different ethnicities?