WORK IN PROGRESS: Challen and Addy

A married couple has been drifting apart for a while.
He's on the go.
She's more comfortable at home.
He has a female friend at work he enjoys hiking, mountain bike riding and running with.
She can't keep up.
One day she tries and ends up in the hospital.
He doesn't notice for three days that she's missing.
It's his wake up call.
But now, she's not answering.