Tracy Beaker star Connor Byrne said the "Big Brother" incident was a "carbon copy" of what happened to him when he worked with Pallett in a stage production.
She last appeared on Live from the House, before heading to the diary room to speak with producers.
'She has now been reunited with her fiancé and family and thanks everyone for their support during her time in the show'.
Mr Thomas, who was issued with a formal warning for physical contact by Big Brother, said there was no "malice" in what happened and many viewers argued it was just play-fighting - with thousands complaining to media regulator Ofcom over her reaction to the "punch".
The pair became very flirty during their time in the Celebrity Big Brother house, with Ben eventually confessing that he loved the ex-Emmerdale star, who is engaged to Lee Walton. Thomas was given a formal warning.
Roxanne Pallett enters the Celebrity Big Brother house (Getty Images)
I want you to know from the bottom of my heart I was showing my affection.Maybe it came across wrong and I really do apologise if it came across that way.
"I was going to ask if you want your washing done but I might shrink them instead" she says as Thomas playfully ushers her into the bedroom.
"I'm not questioning your integrity", Pallett replied.
She tells the other housemates of the incident: "At that moment, I have never felt an impact and a repetition of fists going into my ribs, in my life".
They agreed to sort out their differences and shook hands.
"Sad to say, from what I've heard, I had a very similar experience with this lady past year", Connor tweeted.
Bursting into tears, a distraught Roxanne is seen telling her housemates: 'He's lying, it wasn't a little [jab] it's like he wanted to hit me'. "I'm thinking, that's not right!" I always fall for it, don't I?
"I feel like I need to get myself together a bit and have 24 hours".
The trailer shows her housemates left deliberating on who to side with, as she claims that Ryan, 34, punched her repeatedly with the intention of causing harm, whilst he insists that it was just playful nudging.