Cage fighter Tom, 24, was arrested and held for breach of peace, after neighbours became concerned and called the police.
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EastEnders actress Danniella, 40, is said to have told neighbours that Tom smashed her possessions during the bust up.
A source told The Sun: "Danniella and Tom have been arguing a lot and things escalated on Friday.
"This row was one of their worst yet and resulted in a lot of objects being smashed.
"Neighbours heard a screaming and shouting and decided to call 999."
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As a result of the argument, Danniella and Tom are said to have called time on their relationship.
The source continued: "She has dumped Tom and headed off for a holiday.
"She came to realise they are not right together. She doesn't need that drama in her life."
Last night Danniella confirmed she was going away, and hinted she was taking time out from her relationship.
Taking to Twitter, she wrote: “Leaving on a jet plane … don’t know when I’ll be back again … #Time4Me #Time2Breathe”, alongside a picture of her passport.
She added cryptically: “Some people need to learn some manners……”
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The reported fight comes just days after Tom and Danniella were pictured arguing in the street, with her throwing a phone at him.
Danniella and Tom have been dating since January this year, following her split from second husband Kevin Jenkins.
Two months into their relationship the couple announced they were engaged and in June, mum-of-two Danniella confirmed she'd sadly miscarried their child.