GAYDAR co-founder Henry Badenhorst has died in his native South Africa.
The Johannesburg-born entrepreneur (pictured), 51, fatally plunged from a tower block on Saturday.
It comes a decade after his boyfriend Gary Frisch — who founded the gay dating website with him — fell to his death from a balcony in London.
They created Gaydar in 1999 after a friend told them he was too busy to find a partner. It went on to become the world’s largest dating site for gay and bisexual men, boasting 4million subscribers at its peak.
The pair went on to launch an award-winning radio station.
Mr Badenhorst stepped back from the website in 2010, after being badly affected by Mr Frisch’s death in 2007.
Present Gaydar boss Rob Curtis told the BBC: ‘He changed the world in a way that surprised him. It was really the first gay social network.’