An abusive partner given a chance to reform ignored a court order and bit his girlfriend on the nose, a court heard.
In April, Benjamin Kent was handed a deferred sentence in which he was told to stay out of trouble and not have contact with Natasha Farnham.
Just weeks later he deluged her with messages, accusing her of being with someone else.
And after getting into her car her he pulled her hair and bit her, Bristol Crown Court was told.
Kent, 24, of Bathwick Street in Bathwick, Bath, pleaded guilty to causing grievous bodily harm on May 10.
Judge Michael Longman jailed him for three-and-a-half years.
Simran Kamal, prosecuting via video link, said Kent breached his restraining order by messaging Miss Farnham.
On one occasion he visited her in the early hours and wouldn't leave until she agreed to kiss him, the court heard.
Miss Kamal said Kent messaged Miss Farnham about a delivery man who visited her home - which suggested he was watching the premises.
On another occasion Miss Farnham found Kent in her home and he asked her: "Where the f*** have you been?"
The court heard a scared Miss Farnham left her home but returned later and sat in her car.
It was then he got in her car, verbally abused her and assaulted her.
Miss Farnham made an impact statement in which she said: "I am absolutely gutted about the situation.
"His behaviour got worse and worse throughout the relationship."
She said the last thing she thought would happen was Kent "trying to bite her nose off".
She added: "I never want to see him again. He broke me.
"I wish I could switch a button and forget about him.
"I hope he gets some help in there.
"I hope he comes out a better person so this never happens to a woman again."
Alistair Haggerty, defending, said: "The assault on Miss Farnham was highly unpleasant.
"He's disgusted with himself.
"He will never forgive himself for what he did."
Mr Haggerty said it was clear the relationship had been "toxic" and his client had no intention of rekindling contact.
He said Kent, who was using cocaine and drinking heavily before his arrest, was drug-free in prison and intended to stay that way.
