From where I am from, people do marry their cousins and its very very very common. I always personally found it quite disgusting, but they don't seem to care.
@Ghekor long story short, he threw away all the build up for characters and relationship for no apparent reason. And went with a route that contradicted everything before it. Also had a bs ability given to a character out of nowhere just to justify this new route and which also doesn't make tons...
I really hate this trope so much. Hey, let's involve someone who obviously doesn't want to be involved with me, but when the time comes, imma run away and say its for their protection... Ugh