One of my girlfriends likes to watch boys' Adam's apple. Why?

Men with Adam's apple and women with breasts are both secondary sexual characteristics. Girls like to observe men's Adam's apple on the one hand because of the principle of "opposites attract" and on the other hand because of curiosity.

There is also a saying that the scientific basis is not high: Men with prominent Adam's apple have stronger sexual desire, more male hormones and stronger smell, which makes them more attractive to women.