Katie Price "laughed her head off" when her former pal's marriage broke down.
The reality TV star was left devastated when her then best pal Jane Pountney embarked on an affair with Katie's husband Kieran Hayler in 2014.
Although Jane's husband Derrick Pountney initially vowed to stand by his wife, the pair have since split leaving Katie - who is now estranged from Kieran - delighted.
A source told The Sun: "Katie laughed her head off when the news got out and said it's karma. She knew about it a while ago and feels bad for Derek but says she's over the moon that the whole world knows and Jane's finally had a taste of her medicine."
"She will never forgive her and said she hopes Jane is going through hell just like she did."
While the fling between Kieran and Jane reportedly went on for months, Katie only discovered it during a holiday to Cape Verde.
She previously said: "I started walking towards the beach and in the distance, I could see these two silhouettes on the sun loungers. My heart was racing because I knew it was them.
"Then there they were, kissing each other. I f***ing got her by the head, pulled her off of the sunbed and started whacking her, saying 'I f***ing knew it you f***ing wh**e. Sl*t!'"
Kieran has said: "The routine was usually the same. I would get into the passenger seat of Jane's car, she would jump on top of me and we would have sex. I didn't wear a condom because it added to the risk and my heart was always racing."
Former stripper Kieran, 31, and Katie, 40, are now awaiting divorce and Kieran has said he is happy to be out of the "toxic" marriage.
He said: "My friends have supported me all the way through. A lot of them are glad that I'm out of a toxic relationship because it ended up being a bit of tit-for-tat."
Tagged in Katie Price Kieran Hayler