Wonder Woman and Lois Lane are both strong women in the DC Universe, but they are obviously strong in different ways because one is a superhero with superpowers. Superman has had relationships with both of them in thecomics, but in the movies we’ve only seen the Kryptonian have a relationship with Lane.
During an interview with Cosmopolitan, Henry Cavill is asked which of the two women Superman really belongs. He starts out by talking about Gal Gadot‘s appearance as Wonder Woman in Batman v Superman: Dawn of Justice, saying:
“Strong women are nothing new for the comic book world. I’m glad they are being represented a bit more in film and on TV. Wonder Woman has been around forever, she is an incredibly strong character. She can go toe-to-toe with Superman sometimes.”
As far as if Wonder Woman is a better fit for Superman than Lois Lane, Cavill says:
“This is a very long discussion because there are a lot of questions to be asked and answered. I mean who is better for a super-powered alien, a human or a goddess? Yes, the goddess can do all the normal things, which we would think are normal in a relationship, and not have any fear of Superman. But you also need to have that baseline of humanity, which Lois provides. And literally keeps his feet on the ground, keeps him down to earth. So that’s more of a debate than an answer.”
That’s a great answer that raises a good discussion. I personally think Superman needs Lane in his life more than Wonder Woman. She’s a better fit for him. Like Cavill said, she keeps his feet on the ground and gives him that touch of humanity, which keeps him humble. As far as the physicality of the relationship goes, though, he would probably have more fun with Wonder Woman because they are more physically matched.
It would be so strange to see Superman and Wonder Woman get into a relationship in the DC Extended Universe, but it’s something that could very well happen somewhere down the road with all of these movies that Warner Bros. is making.