It was seven days delayed

I don't recall the last time I signed in
Before this afternoon. I should have known
That there would be a message in the bin,
Unanswered long enough to be a sin.
So, breathing tight and zeroed at the bone,
I clicked as though the message was a stray
And armed explosive shell. You were alone
And on the train, and missed me; on your phone
You said as much, and sent it on its way
A week ago.

I started to reply,
And wrote you all that I could think to say
Before remembering that half a day
Of time lag separated you and I,
Deleted my response and wrote a poem
To pass the time and let my sleeper lie.