Character A has the nagging feeling something's wrong with character B. They haven't seen each other in a few days. Both having busy schedules which kept them apart. A doesn't have any evidence for their feelings and it's probably just their over-worrying brain. Still, the nagging feeling keeps clawing at their gut and sitting heavily in their neck until A gives in and goes over to B's place.
Letying themselves in, A finds B napping on their sofa as is their habit. B loves a good late afternoon nap. Silly, really, to be so worried over nothing.
Feeling quite embarrassed, A makes to leave, hoping B hasn't noticed what an utterly ridiculous worrywart A has been.
Except... aren't B's cheeks a bit flushed? And why is B suddenly curling up under their blanket as if they are cold? Isn't B's nose a touch pink?
Stepping closer, A ever so slightly touches the back of their hand against B's forehead, finding it far too hot for their liking. B squirms and makes whimpering sounds of discomfort.
Perhaps it is good that A is such a worrywart after all.