Is there ever a 50-50 in a relationship? In a relationship sometimes you give 90 and your spouse gives 10 or vice versa. Unfortunately, CS is premie in terms of romantic relationship, he only had one before MR. I wouldn't even count the relationship he had with EY. I think he loves Mari as much as Mari loves him. He just doesn't know how to express verbally and/or through actions. Further, he is unable to deal with all the emotions (positive & negative) that he's having. Remember he said in episode 1 or 2 that he never or rarely ever had arguments or fight. He's technically a baby who is trying to feed himself.