Ehm. You’d be surprised, Sassy. I’ve heard friends talk about how they went on a “first date” with guys and that they were saying things like “I used to have an Italian, but she was overly jealous” or “Ah, I once had a Spanish chick, she was kinda lazy”.
It may not come in a direct way like “Oh, by the way, I’ve had 5 girlfriends so far, had sex with 4 of them, nearly had a kid but managed to get her to abort it, etc.”, but ex-girlfriends pop into conversations quite often.