Shu and Valt have unspoken feelings for each other. Neither of them intend on telling the other about their feelings. However this doesn't mean they won't give the other hints about those feelings.
"Here's to the girls who don't wake up with perfect hair. Who don't mind eating a Big Mac instead of a salad. Who don't wear 50 pounds of makeup. Who'd rather spend the day in sweatpants rather than skinny jeans. Who love the comfort of t-shirts. Who don't get all the guys. Who aren't 'popular' but feel like it, when...