a side of him that I'd never seen before

There's a weed whose name I've meant all summer
to find out: in the heat of the day, dangling pods hardly
worth the noticing; in the night, blue flowers... It's as if
a side of me that he'd forgotten had forced into the light,
briefly, a side of him that I'd never seen before, and now
I've seen it. It is hard to see anyone who has become
like your own body to you. And now I can't forget.

[Carl Phillips {1959- } 'Just the Wind for a Sound, Softly' from Silverchest]