I suppose some people like to pair Kovu and Nala, so they draw pictures of them together or write fan fics about them. But fan fics are.. fiction.

Just because you read in a fanfic that Nala is together with Kovu does not make it true.
At the end of SP, Kovu and Kiara was still together, and so was Simba and Nala, and that’s how it will remain until Disney says otherwise.
