The governor of St Helena was presented with what they believed to be a female tortoise, named Frederica, in 1991 as a possible mate for Jonathan.
For the past 26 years, the pair have been inseparable but a recent examination on Frederica found out that she was probably a male, according to The Times
It had been hoped the pair would mate when they were introduced but no offspring has ever been produced – and it seems now there is finally an explanation.
Jonathan is something of a star on the tiny island in the South Atlantic Ocean – he features on tourist posters and even appears on one of the island’s coins.
He arrived on the island in his thirties, a gift from the Seychelles in the 1880s, and has been pictured with monarchs, princes and statesmen.
He is blind from cataracts and lost his sense of smell but he has recently been given a new diet to extend his life.
Last year a bill was introduced to allow same-sex marriage on St Helena but it was later withdrawn after opposition from islanders.
Jonathan may just be the animal that could finally pave the way for equality on the island.
For the record, homosexuality has been documented in over 2000 species.