I don’t understand how it’s primarily something only men do: fantasize about a woman after a brief, if one at all, interaction with a woman. Terms are coined to make fun of men like “manic pixie dream girl” as if he can help seeing a future with you in that one spark of eye contact. Love at first sight does exist, in my opinion.
Every woman I know does this, and as a woman I do it. Why do you think our relationships tend to fail? We’re so fixated on perfect that we forget to let things be.
This is why there will never be peace; we’re so concerned with Us VS Them that we can’t go a day without just letting things be.