Tyger Drew-Honey thinks it's "really lovely" Claire Skinner and Hugh Dennis have found love together.
The "Outnumbered" co-stars, who played Pete and Sue Brockman on the BBC show for almost a decade, started dating last year after both of their marriages broke down and the 22-year-old actor - who plays their screen son Jake - couldn't be happier for them.
He said: "They're actually really happy. It's not just for the Press. It's genuine, real and looks like proper love.
"Obviously their marriages broke down at the same time and then, a year later, they managed to find this thing.
"It's really lovely."
And Tyger admitted everyone involved witht he show is delighted for the couple.
He added: "I've been working with them for so many years. It's nice for everyone - the crew and cast - because there's obviously 50 or 60 people who've known them playing a couple and are now seeing them being together for real."
Hugh, 56, previously admitted he and Claire, 53, are "so very happy" together.
He said: "I am very, very happy, we are so very happy. It's nice and yes, it's so lovely."
The pair are believed to live together in the £1.2 million London penthouse flat Hugh bought after he and his second wife, Kate Abbot-Anderson, split in 2015.
Claire broke up with her husband Charles Palmer two and a half years ago and she and Hugh reportedly started dating over a year ago.
A friend said: "They are very much in love and have been for the last year. It's the most wonderful love story, they found one another at the right time in their lives and it's all rather sweet.
"Over the past few weeks there has been some talk within the acting world of them being an item."