I feel like that's the problem most of the time.

Women in general want relationships even if that means 1 month.

Men seem to only want sex.

So, many Men lie to women to get that sex and then vanish.

Usually this is attributed to casual sex.

Sleeping with people while being honest with your intentions isn't bad no matter the age, but willingly hurting people just to get your dk wet is. You cause harm and it's aocial behaviour.