Tom Daley is reportedly dating Oscar-winning screenwriter Dustin Lance Black, twenty years his senior.

The 19-year old British Olympian - who stepped out for the first time for dinner with his family on Tuesday night - came out as bisexual to his fans via a video message, and revealed he is currently dating a man.

Now sources claim that man is Dustin, 39, an American LGBT rights activist and celebrated figure in the film industry.

A friend told The Sun: 'He's besotted with Dustin. They love each other and aren't concerned what anyone says about age difference.'

'Dustin is very proud of Tom for making such a powerful statement about his sexuality,' the source continues. 'They are officially in a long term relationship and are talking about having a future together.

The pair reportedly were introduced at the Soho hotel in London this summer, with Tom allegedly travelling back and forth to Los Angeles to visit Dustin since then.

Daley talks about his boyfriend in his video message, where he said: 'Come spring this year my life changed massively when I met someone and it made me feel so happy, so safe, and everything just feels great. And, well, that someone – is a guy.’

He admitted that ‘it did take me by surprise a little bit’ but ‘something just clicked’ and ‘it felt right’, adding: ‘My whole world just changed there and then.

'Of course I still fancy girls but, I mean, right now I’m dating a guy and I couldn’t be happier. It feels safe and it really does feel right.’

Dustin came out at a similar age to Tom, during his high school senior year and after spending much of his youth hiding his sexuality.

'I became intensely shy, I had thoughts of suicide,' Dustin told The Bay Area Reporter in 2008. 'I was a pretty dark kid, because I had an acute awareness of my sexuality, and was absolutely convinced that I was wrong.'

Now through his career in film, television and on stage, Black has brought the LGBT subject to the foreground, starting with his directorial debut, the gay romance film The Journey of Jared Price, then on to win the Academy Award for Best Original Screenplay for the 2008 film Milk.

The Oscar-winning film told the story of gay activist Harvey Milk, California's first openly gay elected official who was assassinated in 1978 because of his unfaltering campaigning for LGBT rights.

Dustin himself has leant his voice to many a equality campaign, most recently to highlight the anti-gay laws in Russia.

Mail Online have contacted both Tom Daley's and Dustin Lance Black's representatives for comment.