Sawyer appeared on MTV's "Catfish" in 2013 with Michael Fortunato whom she had been communicating with online for seven years.
Fortunato died of a pulmonary embolism a month after their episode aired.
According to Entertainment Weekly, the Australian-born singer, who was on the Fox program in 2008, died at the age of 35.
SINGLESWinner (2): 2018 - Nottingham; 2017 - Kuala Lumpur.
"Food Network Star" contestant Cristie Schoen Codd, 38, was five months pregnant when she and her husband, Joseph Codd, 45, went missing in March.
A North Carolina man, Robert Jason Owens, is accused of killing them. Army Ranger Captain was known for his roles on Bravo reality television shows "Work Out" and "Friends to Lovers," the latter of which debuted a few days before his death."Biggest Loser" contestant Damien Gurganious died on November 24 from an inoperable brain bleed caused by the sudden onset of a rare autoimmune disorder, idiopathic thrombocytopenic purpura (ITP), his wife Nicole Gurganious said in a public Facebook post. Ryan Knight, who was part of the 2010 cast of MTV's "Real World New Orleans," died in November, according to police in Kenosha, Wisconsin.
The body of Gandee, 21, was discovered in a vehicle along with the bodies of his uncle, David Dwight Gandee, 48, and Donald Robert Myers, 27.
It was later reported that the cause of death was accidental carbon monoxide poisoning."Swamp People" star Mitchell Guist, right, died in Louisiana in May 2012.