"have a good day at work." dean said. "yeah, you too." castiel muttered, trying to hide his blush. "want me to pick you up?" cas nodded, and waved him off as cas walked into the large library.
it wouldn't open for a couple hours, which gave him enough time to complete his college work.
he had a system; sneak around doing work and his break to finish his classwork (that he just didn't have the time to do in person) and homework for eight hours, and he's usually done by the time he gets home. it worked.