The actress recently joined the BBC soap as Kirsty, the secret wife of Max Branning (Jake Wood), causing a major rift in the Branning household.
She explained that two ex-boyfriends had beaten her up during their relationships. When she was 14, her 16-year-old partner beat her, while a second boyfriend knocked one of her teeth out in her 20s.
"He was the worst. He was very charming and from a good background. I thought he was too good to be true - and he was," she told the Sunday People.
"Two months into our relationship he started with his controlling behaviour and then I was getting hit every weekend. He'd smash me up and then say, 'I'm not taking you out - look at you, you're an embarrassment'."
She continued to reveal that the ex-boyfriend would humiliate her in front of her friends, while also attacking her with a plank.
On other occasions in her painful time with him, which lasted for more than a year, he humiliated her in front of his pals and attacked her with a plank.
She said: "My whole eye was closed. I had great bumps like eggs on my head, bruises black and blue.
"You wouldn't have recognised me. He once tried to hit me with a crowbar but missed."
The 34-year-old added: "I was a nervous wreck, down to 7st, and I'd shake when I did go out. You stay because you lose your confidence.
"If someone tells you often enough you're worthless, you start to believe it."
The man was arrested for attacking the actress, but Wareing did not want to go through a trial.
She told Radio Times: "Looking back, I was a bit stupid. But I see myself as a survivor.
"I don't want to come across as a victim with a sob story. I've got a fantastic life. I'm not a victim. I thank the bullies out there for making me who I am. Some people become weaker but the bullies made me stronger."
Kirsty will continue to cause drama on Albert Square in the coming weeks, since her arrival on Christmas Day.