huh ? and why would it be illegal ? it`s natural for cousins o love each other and many in here who marry are related and some families were used only to marry their relatives to keep their blood line pure as they say so there i nothing weird about that !
it depends in what country and culture

Wtf?! Is it even legal for cousins to fall in love with each other, coz I find it weird.
The story was great though, and it would be much so if they weren't cousins ;)