SAM Thompson looked downcast as he was seen for the first time since Zara McDermott and Louis Tomlinson were pictured holding hands.
Zara, 28, and Louis, 33 - whose relationship is going from strength to strength - were spotted on a romantic stroll in Malibu on Tuesday.
It marked the first time they've been pictured as a couple since their cosy dinner date in March.
Now, Sam, 32, who split with the Love Island star just four months ago, has been spotted out in London.
The Made In Chelsea alum dressed casually in a denim jacket and a black T-shirt while making his way back home.
Sam shielded his eyes with black sunglasses and listened to music through his AirPods.
Hours before Zara and One Direction singer Louis were photographed yesterday, Sam posted a snap of himself kissing Albus - the cat he and Zara share.
Earlier today, he teased a Guinness World Record Challenge on Instagram.
Posing with a judge from the organisation, he captioned his post: "We're back baby!" with a laughing emoji, tagging, "@joannebrentofficial @guinnessworldrecords."
Looking happy and relaxed in each other's company, the new couple wore casual clothes to head to Soho Beach House where they enjoyed a late lunch by the ocean.
The twosome looked deep in conversation as they shared a laugh and sweetly walked hand in hand together.
Zara and Louis had been snapped through the window enjoying £100 fish and chips together after getting to know each other out of the spotlight.
Sam Thompson mocks split from Zara McDermott just days after he sparked concern with video of him 'looking low'
Then, last week, they jetted out to spend time together in Los Angeles, where they both posted videos from a Stereophonics gig at The Wiltern theatre.
Insiders claim Louis has already introduced Zara to his family.
A source told The Sun: “Louis and Zara are totally hooked on each other.
“They have kept everything very low key so far but their relationship is getting more serious.
“Zara has been busy filming a new documentary for the BBC but she scheduled in a break to get away with her family, then spend some time with Louis.
“She is really happy and has found someone very special in Louis.
"They share a lot of the same values and they both have a wicked sense of humour.”
The Sun first broke the news they were dating, weeks after Zara’s shock split from I’m A Celeb winner Sam.
He has spoken of feeling low since Zara - who he was with for five years - was seen out on a date with Louis.
The couple's relationship ended soon after spending Christmas apart, but Zara is yet to comment publicly on the split.
However, the reality star confirmed she was on holiday with the singer last week when she shared a picture, taken during an outdoor lunch, of blueberry pancakes and eggs Benedict.
While Louis' face was not visible, his tattooed arm could be seen in the background of the shot.
