Greg knew Kevin was busy and he was trying not to be too clingy though he knew he wasn't always successful. Ever since he and Kevin had admitted their feelings he had wanted to be close to the other at all times.
When he had realised Kevin wasn't in bed he got up, pulling on a dressing gown over his boxers but leaving it open. Following his senses he discovered Kevin in his office, "You should be sleeping" he commented, entering the room silently.