Sam Thompson shared a gushing tribute to his sister Louise on Instagram on Wednesday as he celebrated her 35th birthday.
The presenter, 32, thanked his older sister for 'being there through his lowest moments' following his split from girlfriend of five years Zara McDermott as she moves on with One Direction star Louis Tomlinson.
Sam shared a series of snaps with Louise, her partner Ryan Libby and their young son Leo, as they enjoyed a family meal at a sushi restaurant to mark the occasion.
The I'm A Celebrity winner wrote: 'Happy birthday to my best friend! The person I look up to the most in this world.
'You’ve been there for me every single day of my life at my highest and my lowest.
'There was a chance, not even a year ago this kind of day wouldn’t be happening and I am grateful for every minute that I get to annoy you.
Sam Thompson shared a gushing tribute to his sister Louise on Instagram on Wednesday as he celebrated her 35th birthday
The presenter, 32, thanked his older sister for 'being there through his lowest moments' following his split from girlfriend Zara McDermott
'Love you mate and I couldn’t ask for a better sister….PS you’re now officially a KAREN'.
It comes as Sam's celebrity dating app profile on Raya was revealed.
The profile shows him posing in one snap with the cat he still shares with Zara.
Another snap on the profile shows him with best pal Pete who has been supporting him through the breakup.
A source told The Sun about Sam joining Raya: 'Sam's been left devastated by the end of his relationship, which was made even more difficult when he saw who Zara was dating.
'Even though he might not be quite ready to jump back into something serious yet, Sam was encouraged by his friends to dip his toe in the water.'
The publication previously reported that Sam was back on celebrity dating app Raya days before his ex Zara's shock new romance with Louis was revealed.
Despite claims he was 'blindsided' by Zara's new romance, it seems Sam was keen to move on himself.
Sam shared a series of snaps with Louise, her partner Ryan Libby and their young son Leo, as they enjoyed a family meal at a sushi restaurant to mark the occasion
He wrote: 'Happy birthday to my best friend! The person I look up to the most in this world. You’ve been there for me every single day of my life at my highest and my lowest'
MailOnline revealed earlier this year that Sam and girlfriend of five years Zara McDermott had split and since she has moved on with One Direction star Louis Tomlinson
A fan last week claimed to have seen Sam on Raya the week before, noting 'So he's back on the dating scene as well.'
Sam had made an account before meeting Zara, which he seemingly reinstated in the wake of their split.
As well as keeping busy by looking for love, Sam is also said to have been partying with his pals in Chelsea and his close friend Pete Wicks.
A source told The Mirror: 'Sam has been making jokes about his life since the break up, and that's not really something you'd be doing if you were experiencing total heartbreak.
'Of course they were sad, but they sort of accepted it a long time ago.
'Sam has been going out and having fun again, he's not dating anyone but he's been on dates.
'He's been around the Chelsea lot and hanging out with Pete [Wicks] a lot. He's really enjoying himself at the moment but doesn't want to be tied down.'
MailOnline contacted a representative for Sam Thompson for comment.
Zara and Louis' romance was exposed earlier this month when a fellow diner at The Suffolk in Aldburgh took snaps of Zara and Louis enjoying a romantic date.
The pictures confirmed rumours of a relationship first detected by sleuth-like One Direction fans who noticed Louis had followed Zara on Instagram and liked a string of her pictures.
According to Zara's friends, Louis has put 'a smile back on her face' following her split from ex boyfriend of five years Sam on New Year's Day.
It comes after Sam's celebrity dating app profile on Raya has also been revealed - showing him posing in one snap with the cat he still shares with Zara
Another snap on the profile shows him with his best pal Pete Wicks who has been supporting him through the breakup
Zara and Louis Tomlinson' romance was exposed last Monday when a fellow diner at The Suffolk in Aldburgh took snaps of Zara and Louis enjoying a romantic date (stock images)
A friend told MailOnline: 'Zara is so happy, it's early days with her and Louis but everything is going well between them.
'News of their romance leaked sooner than they intended - the plan was to keep things private for as long as possible. They still hope to keep intimate details away from prying eyes.
'Zara is enjoying being wined and dined and experiencing the thrill of dating someone new again.
'She had been with Sam for years and in the end their relationship became transactional… they had lost their sparkle. Louis has certainly put a smile back on her face.'
Zara and Louis tucked into £100 fish and chips, plus cocktails, at the £315-a-night hotel in Suffolk.
The pair stayed at night and left for their respective London homes in the morning.
MailOnline revealed in January that Zara had split from long-term partner Sam after five years of dating.
They lived together in Sam's Fulham house which was usually the base of the couple's amusing TikTok videos.
