Being a genuine person:
I think a person is at their most beautiful when they are genuine, when they let their substance shine through without any obstruction. If I’m talking to you and I feel like I’m talking to the real you, not a persona that you’ve adopted or a façade you’ve set up, then in that moment, I don’t think I could turn away.
OperationJack says it’s being a “lady in the streets, freak in the sheets”:
If you’re intelligent, intellectual, interesting, fun, kind, confident, relaxed, sane, and classy, you’re far beyond half way to being wife material. If you’re all of these things plus open-minded, patient, willing to explore, and at times a bit of a slut in the bedroom, I’d be surprised if you’re even single.
Knowledgeable, if not “intelligent” or whatever:
I say this instead of “intelligent”, because to me intelligence means problem solving while knowledgeable means well-read. Intelligence is great, but I’d be fine with a ditz that had a surprisingly broad knowledge of horror movies and late 90s punk bands. The ability to carry a conversation is super desirable.