The pair confirmed their surprise romance on Wednesday after she posted a series of loved-up picture on them on a yacht in Capri in Italy with their co-stars.
Former US soap actor Chrishell and Oppenheim group boss Jason, who both appear on the Netflix’s hit property reality show, can be seen cosying up to one another during a day at sea.
Selling Sunset co-star Mary Fitzgerald, who previously dated Jason, commented: “Nothing makes me more excited than to see two of my closest friends together and making each other so happy!”
Her husband Romain Bonnet wrote: “So happy for you guys ! Finally people will stop with Jason and Mary hopefully.”
Jason’s brother and business partner Brett added: “Love you Chrishell. Thank you for making my brother happy.”
Gleb Savchenko, who Chrishell danced with during her stint on the US version of Strictly Come Dancing in 2020, also commented: “The best love you both so much!!!!!!”
Chrishell’s rep later confirmed the relationship to People, saying “they are happily together”.
Jason, who is Chrishell’s boss at the Oppenheim Group real estate firm where Selling Sunset is set, added to the publication: “Chrishell and I became close friends and it has developed into an amazing relationship.
“I care about her deeply and we are very happy together.”
The last series of Selling Sunset focused on Chrishell’s shock split from husband and This Is Us star Justin Hartley.
She later went on to date dancer Keo Motsepe, who she met while appearing on Dancing With The Stars.
A fourth and fifth series of Selling Sunset were confirmed earlier this year, with filming being well under way.
Selling Sunset series one to three are available to stream on Netflix now.