= something destined or suitable, is not the Latin fatum, but the French fait = share, one’s own, that which suits one; as “voila mon fait,” that is the man for me.
“Pour moi, ma sieur, a dit la cadette, jʹaime le solide, je veux un homme riche, et le gros don Blanco sera mon fait.”—Le Sage: Diable Boiteux.