Tim watched her, eyes wide. He was relieved, a little nervous, a little happy. He was a lot of things. Here was this girl, this person he barely knew, emptying herself out for him, going the extra mile to make him be a better person, and he was just barely keeping up. She was so nice to him. He had to try to be nice back. He still needed to get himself in check, so he tried to lighten the mood a little. 

He was about to try something incredibly risky: he was going to make a joke, which was probably his absolute worst social skill of all time. He thought fort a moment, specifically choosing out the perfect words for this nearly unimaginable feat he was about to pull off. 

"I'm glad you're not crying, because, honest to god, I probably would have ran away." He chuckled a little at his own joke, hoping she would too. He just wanted to be good at cheering her up right now.