Does seduction really exist? Or is the seductee already prone to being seduced?

Maybe it’s bad movies or badly-plotted books, but I’m not sure that seduction exists in real life.

Are people really and truly seduced by another person for sex, love, or whatever? (Gender doesn’t matter – Females seduce males, males seduce females, males seduce males, females seduce females, and so on.)

My theory is that only a target (seductee) that is already open to a relationship can be seduced, in which case that person isn’t really being seduced; they’re being persuaded to follow up on something that they were already open to doing.

If a person is truly ‘closed’ then they can’t be seduced, no matter how charming the seducer might be.

Does seduction really exist?