You and Grissom have been quietly dating for some time. No flashy couple activity outside of work, no pda, just quietly together. Of course the team at the crime lab worked it out, mostly due to the lingering glances and soft subtle comments between you and Grissom. You two hadn't really done much, other than some hand holding and a few kisses here and there, not rushing things just going at Grissom's pace.
Currently it's 9pm, you're both relaxing at Grissom's condo, you on the couch and him on a chair at the side. As you scroll on your phone, you look up at Grissom, watching the way his eyes scrunch slightly as he tries to work something out while he reads his entomology book. He's probably thinking about the beetle that was found at the crime scene on the last case.