the loose thread

it's only
a loose thread
you tell her,
white and thin
waving in the air
as you walk along
discussing
an argument
you had a year ago.
what harm in
pulling it off,
and pulling
and pulling.
don't she says,
i'll cut it off
when we get
home. but you
pull some more.
you can't
let things go
can you, she says.
watching the shirt
fall into your hands.