Valid point, there's no one single lore to her or Superman. For all we know Krytonians are open to sex with anyone that they are attracted to.
There's a splash page in John Byrne's Man of Steel where Lara, Kara's aunt, sees her first Earthman remotely, and recoils in horror. Something about dirt under his finger nails and chest hair being barbaric and backward.
Non is fuc#ing a robot, behind his psychopath terrorist wife's back, in season 1.
What is Laura Vandervoort up to these days?
(Google, google.)
Working steadily.

However...
The ship from Superman the 1979 Movie said that the baby had been in flight for thousands of years. So I'm thinking Jor-El sent some care packages ahead of his kiddykins, to make sure that there would be something better than the dark ages waiting to nourish baby Kent.