Dennis laughed at her apology, "don't be sorry. I don't care," he looked at her, "don't worry," he added. He didn't tell her why not to worry... just, he wouldn't come after her if she got it. He'd decided that much.
He continued down the hall.
She'd get over whatever sadness she felt. Her life would go on like it always had and sooner then later she'd forget why she ever tried to hold on to him.