Why Your Body Judges Your Date With a Kiss

According to a psychology professor, an erotic kiss involves an unconscious comparison of immune systems that can determine attraction, alongside chemical and physiological factors like neurotransmitters, hormones, and pheromones, making it a complex social and biological interaction.

Why Your Body Judges Your Date With a Kiss
Turns out, swapping spit is less about romance and more about running a biological background check. Thanks, science!

Think that hot kiss is just fireworks and good vibes? Think again, Romeo! Turns out, every time you lock lips and swap spit, you're running a full-blown biological background check on your partner. And a shrink says this unconscious “interview” can make or break your chances before you even get to second base.

Yeah, we're not making this up. According to Manuel González Oscoy, a big brain over at the UNAM School of Psychology, that deep dive with tongues isn't just about pleasure – it's a sneaky way your body is checking out their immune system.