Watch The Best Man for Free: How to Stream the Movie Online at 123Movies. . When writer's block derails the literary dreams of Olly Pickering, he has to move in with his friend Murray after losing all his money. Things start to look up when Olly's college pal James asks him to be the best man at his wedding. Prior to the nuptials, Olly is drawn to a woman whom he thinks is the bride's sister -- only she turns out to be the bride, Sarah. Can Murray, who dislikes James, help get Sarah and Olly together?