First, they talk to robert, boyfriend number one who is on the road in his long haul truck. how did he react to the news? >> he was devastated. >> easy enough to check in on robert, gps records put in a full days drive away when nikki was murdered. and when they met him, as we did, they could plainly see that his grief was real. >> i mean, that was my better half, and she is gone. it is a hard thing. >> this was how detectives discovered the unusual nature of robert and nikki's relationship. roberts that he knew about the other boyfriend, and he said he did not mind. he said he wanted nikki to...