"I... I guess you're right." He's not even sure what he'd do at an art day, but surely just showing up for a bit won't hurt anything. And he can always leave if he has to.

"I'll... I'll go." It's hard to say, his brain continuing to tell him that it's childish, but... she's been nothing but nice to him, despite his attempts to get her to go away. The least he can do is humor her a bit.