Sorry I'm currently Team FL

Don't get me wrong. I love the ML but there's no denying that at the beginning of the series he was a bit of a jerk who could care less about the ppl he had relationships with and dumped them the moment he felt the relationship was inconvenient. He chose the FL because she was 'interesting' and agreed to some specific terms. He didn't care for her then and even admitted that he had felt amused that she brought up her infertility when they were making their contract. It's true that he really loves the FL now but this is definitely his previous behavior and attitude coming to bite him in the ass.
Nevertheless, they do love each other and this is just a bump in the road and a chance for character development. Fighting!~