. Depending on what ‘island’ means

The island that the topic of this part of the conversation is about, the one that the film "mamma mia" takes place on.

but the idea of her being ‘yours’ is kinda weird, possessive; especially if you didn’t do the work of making the person.

it's a semantic indicator of a relationship of a generic word. Jesus fucking christ, not everything is a freudian slip that indicates someone is a patriachal nazi.