Franks who was inflamed by this, decided to solicit the murder of Ms Ruutna and went onto the dark web where she tried to hire a hitman, using crypto-currency.
A lady has been found guilty of trying to hire a hitman to kill her rival after sleeping with her boss.
The Sports Direct worker was found guilty after a four day trial.
The trial established that Whitney Franks posted messages on the dark web offering £1,000 to kill Ruut Ruutna after a fling with Milton Keynes Sports Direct manager James Prest in August 2020.
A jury of 10 men and two women which unanimously convicted Franks, of Two Mile Ash, Milton Keynes, of soliciting murder, previously heard that 26-year-old Franks was "rampantly jealous" when Ms Ruutna joined the shop and then started an affair with the manager, whom Franks was already dating despite him already being a father-of-two.
Franks who was inflamed by this, decided to solicit the murder of Ms Ruutna and went onto the dark web where she tried to hire a hitman, using crypto-currency.
Ms Ruutna's home address and personal details which she shared on the dark web was spotted by BBC investigative journalist Carl Miller, who had been doing research into the dark web. Carl tipped off the police.
Prosecutor Andrew Copeland said:
"Whitney Franks and Ruut Ruutna were work colleagues together with James Prest, who was general manager at Sports Direct in Milton Keynes.
"They were not only work colleagues but love rivals of James Prest and both were romantically involved with him at the same time. Both knew James Prest had a long term partner with two young children.
"They were not concerned about that but were concerned about each other. They both knew that James Prest was not prepared to leave his long term partner or their children.
"He tried to play them off against each other."
Mr Copeland added;
"On the website was a message, including Ruut Ruutna's address, in Milton Keynes, Facebook profile and description.
"The defendant has not denied she wrote this.
"It read: 'I'm looking for the murder of a woman. I have £1,000 and I am willing to pay more. This woman has caused a lot of problems for myself and others. Please can you help sort this out'."