Someone stuck in bed with a cold is a surprisingly good audience — there's nothing else to do and the bar for entertainment is on the floor. These lines range from genuinely sweet get-well material to jokes about catching feelings along with whatever's going around.
They travel best by text: a well-timed terrible pun to someone off work says you're thinking of them without the weight of a proper check-in.
Sick-day flirting is a genre of care disguised as comedy: the terrible pun texted to someone with the flu is really a welfare check with better packaging. It works because illness strips the performance out of dating — nobody is impressive with a blocked nose, so a line that meets them there reads as genuine. Soup delivered alongside doubles the effect.
Related wards: medical lines for the professionals, doctor and nurse lines for the specific fantasy, and depressing lines when the patient's humour runs dark.

