I think it was just a partner. It was never indicated to be more then that. I'm pretty sure if they were to be lovers, they would've touched more on the topic.
I am reading this for Kim Dan but shit tf Im crying so much sorry my baby I will receive that Cartier because I'm a lowly peasant who doesnt even have car keys and I'll find a way to be happy for both of us there are better guys out there I promise
He was such an asshole that it's funny