match is the most widely-used dating site in the world and has nearly 1.8 million subscribers.
It works in the most traditional way: Simply create a profile, check out your potential matches, send them a few messages and then arrange to meet for a date.
He is appealing for women in violent relationships to seek help, and be cautious when online dating.
The 44-year-old said: "Sharon was the kindest, most loving sister.
He said: "I used to check up on her all the time, I was incredibly protective."One day when I was taking her over some shopping, I noticed she was looking brighter, and she told me she'd met someone online."She showed me their messages to one another and I was horrified.
With half of all single people now using some of the best online dating sites to find love (or at least quick, no strings sex – hello, Tinder), long gone are the days when Internet dating was seen as embarrassing or cringe-worthy.
I called the police who told me the news, Sharon was dead."I knew immediately who had killed her.
We were eventually told Kevin Hawke had called the police after killing my sister, and had been charged with her murder."As we waited for the trial I planned Sharon's funeral.
Just three days later, on July 13, 2014, police found her dead in her flat in Liverpool.
And now Stephan, from Wirral, Merseyside, is determined that his sister's death will not in vain.