The model upset the Team GB star by rejecting his advances due to having a boyfriend on the outside.
After her eviction on Wednesday (August 29), Rhian told Brian Dowling: "In there I felt like I didn't have anyone to talk to... it's been a nightmare."
When asked why she thought the public had chosen not to save her, she suggested: "I'm one of the quietest, and I don't know if the Ashley situation had anything to do with it."
The 25-year-old claimed that she didn't enter the house with a gameplan, arguing instead that she "just wanted to go in there and change the public perception" of her after the Vernon Kay 'sex texting' scandal, which she denies.
Discussing her relationship with Ashley, she said: "I know exactly where I've gone wrong.
"I feel like the Ashley thing has ruined my time in here, because that's what I'm known for now."
Dowling revealed that Rhian's boyfriend had refused an invitation to come to the eviction taping. When asked whether she thought she knew what that signified, Rhian replied: "Probably, yeah."
When quizzed on the Danica Thrall/Lorenzo Borghese/The Situation love triangle, Rhian revealed: "I've tried to stay out of it, but if she picks one I hope it would be Prince Lorenzo. He's more sophisticated, he's a proper gentleman whereas The Situation is more of a Playboy."
She then expressed her desire for Danica to win the show, and Julie Goodyear and Samantha Brick to be the next housemates evicted.