
Her shocking behaviour tore the family apart, and now sister Danielle says there's no cha-cha-chance she'll ever trust her with a man again.
CLICK HERE FOR RAUNCHY PICS OF DANIELLE
Meanwhile ex-EastEnder Jessie, 36, has DUMPED Tommy O'Neill, after landing a place on the smash-hit BBC1 contest, which starts next Saturday.
Model Danielle, 25, said: "She's volatile, she's manipula- tive-she'd do whatever it takes to get what she wants." She also told how Jessie:
FOUGHT with her during boozy bust-ups when they'd TEAR each other's HAIR out.
TAUNTED her with abusive texts over her topless modelling.
CUT out her family and surrounded herself with starstruck hangers-on.
SCREWED up her lovelife by picking fellas who were no good for her.
Danielle-who uses the surname Mason for her modelling work-fumed: "I feel badly let down by Jessie. But all her relationships end in tears.
"She ends up falling out with everyone-she could have a row in an empty room."
The sisters used to be close but started rowing when Jessie got her soap role as Kat Slater.
Then last year she stole Danielle's fella and cut off all contact. Dani first met part-time boxer Tommy, 25, when they were in the same drama class at the Poor School in King's Cross, London, last year. Also on the course was one of Jessie's former theatre pals. Tommy had never met Jessie-and Dani never introduced them-but suddenly the star was seeing him behind Dani's back.
She said: "Tommy and I clicked instantly, I really fancied him.
"Our relationship built up over the four weeks of the course, and on the last day we decided to start dating. That night I stayed over at his house in King's Cross and met his dad.
I used to speak to him about Jessie all the time because they'd both had similar problems from their wild pasts."
The couple had been together for a month when Danielle couldn't see him for a few days because she was moving house.
She said: "That week Jessie called me out of the blue. We hadn't spoken in over a year so I knew something was going on.
"We both cried because we hadn't spoken in so long. Then she said to me, 'You've been seeing someone from drama school, haven't you?' I asked how she knew and she said she knew people at the school. She asked, 'How's it going?' and I said, 'It's going well but I've not seen him this week.'
"Then the phone went dead.
"The next morning she called again and asked, "So are you and this guy still seeing each other?" I said yes. She replied, 'Well I've been seeing that guy.'
"Jessie admitted she'd known I was seeing him and that she'd slept with him at his mum and dad's caravan park."
Danielle, who has not heard from Jessie since that phone call, went on: "She never introduced Tommy to the family but when we heard they'd got engaged nobody was surprised.
"She rushes into relationships because she needs stability. And now it's all over-he's just another guy on a long list.
"When she took Tommy from me she was bored-she had no work and needed a project.
"Now she's doing a big TV show, she doesn't need him."
Jessie's string of failed relationships include her first fiancé, Dave Morgan-dad of her daughter Tallulah, now three.
Danielle said: "Jessie goes for people who are below her social standing. She wants to be with someone who thinks, 'Oh my God, I'm going out with Jessie Wallace.' Dave treated her the best out of all her boyfriends.
"When they split she pushed me and Mum away and became close to people who were with her just because she's famous."
Jessie and Danielle, who have different dads, grew up with their mum and other sister Joanne in Ascot, Berks.
Danielle said: "We'd tell each other everything." But when Jessie landed her EastEnders' role, she started drinking heavily.
She was arrested for drink-driving, suspended from the soap for two months, and had boozy bust-ups with her sister.
Danielle said: "One night the neighbours complained because we had a serious fight with the front door wide open. The newspapers were told Jessie had got into a domestic but it was a huge fight with me.
"We both gave as good as we got. I was just as much to blame as her.
"Another time we pulled each other's hair so hard, it was like a horror movie. When we washed our hair afterwards the drains actually got blocked because so much fell out."
And when Danielle started modelling, things got worse. She said: "Jessie would leave drunken messages on my phone, like, 'Hello my name's Danielle and I get my t**s out for money.' It upset me and my friends were horrified."
But despite the feud, Danielle insists she'll be rooting for Jessie and her dance partner Darren Bennett on Strictly.
She said: "I'm furious about the Tommy situation but I hope one day we can sort it out. I think she'll do really well on Strictly-I hope so.
"Jessie has two left feet but she'll surprise every- one-when she puts her mind to something she makes things happen."
