Cousin marriage?

[Miharuka]

But Kovu really looks like him I have to say. o-o''

But...I don't get the thing it still wouldn't be kinda weird if Scar's isn't his real father.
Because look, when you have a cousin and he's adoptabled(or something) also. You still sees him as your cousin, right? You can hardly say he isn't I think.
So...
To me it still sounds weird. xD

[Pixie]

But Kovu really looks like him I have to say. o-o''

But...I don't get the thing it still wouldn't be kinda weird if Scar's isn't his real father.
Because look, when you have a cousin and he's adoptabled(or something) also. You still sees him as your cousin, right? You can hardly say he isn't I think.
So...
To me it still sounds weird. xD

But Scar didn't adopt him. He just picked him as his heir.

[SummerSnowLeopard]

It is stated right in the movie that Kovu's father is an unknown lion. In the cut scene, Kovu says: "He wasn't my father, but he was still...part of me"
And Nuka says, "Kovu, Kovu, Kovu. Scar wasn't even his father. He just took him in"

So Kiara and Kovu are not related O.o