Brian Betts and O'Neil Mc Gean met in the 1990s and dated for more than a decade before splitting up, Betts going to Maryland and Mc Gean to Mexico.But in 2010 Betts was killed in his home by a gang of teens who set him up using a gay chat line before robbing and shooting him.
Mc Gean, who had attended his funeral, was then killed in Sinaloa state last year after going to meet a man he was introduced to on a dating app.
Brian Betts and O'Neil Mc Gean met in the 1990s (pictured) and dated for more than a decade before splitting up.
While the term has several meanings, the most frequent usage refers to two people exploring whether they are romantically or sexually compatible by participating in dates with the other.
With the use of modern technology, people can date via telephone or computer or meet in person.
This period of courtship is sometimes seen as a precursor to engagement.