Mark Lukack, from Monterey, California is married to a woman named Giulia, and they have a son together.
Last year, Mark gave a TED talk on what it's like to live with a person suffering from bipolar disorder.
He spoke openly about the time Giulia talked about jumping off the Golden Gate bridge in San Francisco.
The couple have a Vespa and she was worrying about what to do with the key of the scooter once she got to her destination.
She felt that if they couldn't find her body after she jumped off, then Mark would never get the key back and this troubled her greatly.
It's a very moving video and Mark touchingly describes how love and commitment helped he and his wife through a very difficult period.
This is definitely worth the watch.
http://www.youtube.com/watch?v=eDVNdPoF9W8
