'I had proved to her for five years that I could cope with her going away for long periods of time because the love I have for her is unconditional'.
He said the first moment he was suspicious of the bond between his then-girlfriend and the dancer was when he was cuddling with her in bed and she received a text from him.
"She had my full trust and support".
Sam, aged 30, split with Dooley after her success on Strictly Come Dancing put strain on their relationship.
Kevin subsequently embarked on the Rock of Ages Musical, in which he was set to star as Stacee Jaxx.
A source was quoted by The Sun as saying: "Stacey confided in her friends that she was struggling to hold down her romance with Sam because her life has been a whirlwind after Strictly. I thought maybe she was exhausted, but she had just won Strictly - she should have been buzzing". Is there anything going on?
Sam said he pushed her to do the show and that he and Kevin initially got on well.
Sam went on to say that the 32-year-old later texted him and said she "didn't start entertaining and texting" Kevin until after they had broken up.
He went on to explain how his relationship with his girlfriend continued to decline until they chose to split.
Strictly Come Dancing finalists Stacey Dooley and Kevin Clifton leave BBC Broadcasting House in London after appearing on the Chris Evans radio show.
"Adults make their own choices. I will tell you anything you want to know". How you conducted yourself.
He said he confronted Mr Clifton in a video call, adding: "He went white".
But the former footballer now claims he discovered Dooley had a secret fling with her dance partner Kevin while they pair were in the midst of breaking up. Just a slippery, slimy snake'.
"He didn't say a word, he looked petrified, so shocked".