Shannon rolled her eyes and smiled back at him, sniffling and finally wiping at her eyes reflexively, even though Dean had already wiped away the tears. She couldn't help laughing a little in spite of herself when he seemed to decide, albeit playfully, that it was the Van Halen sweatshirt and then he burst into song.
It was really cute that he was trying to make her feel better, she thought. Even if she did kind of hate Van Halen.
Before she could stop herself, she teased back, "well, maybe then I should just take it off..." Her amused smile turned into a sheepish grin. Yeah, she shouldn't have said that, probably... "If it's just the sweatshirt that's the problem, I mean..." she went on casually, looking up and away from him, "that's a pretty easy problem to solve." Her eyes went back to him and she grinned. "But I think you're lying when you blame it on Van Halen." She winked.