The Endless Knot.

In 1999, best friends Alex Lowe and Conrad Anker were overcome by an avalanche while climbing in the Tibetan Himalaya, only Conrad survived. Conrad suffered terribly from Survivor's Guilt and in comforting one another, he and Alex's widow, Jennifer, unexpectedly found love. Now Conrad and Jennifer try to find meaning beyond tragedy with a mountaineering safety school for Sherpas