The 22-year-old previously lived with her first boyfriend - Bert Mc Cracken, lead singer of The Used.
Last May, Kelly was reported to have married her ex-boyfriend - Fields musician Matty Derham - in an inflatable church at Ireland's Electric Picnic festival.
Kelly has reportedly moved into his pad in Brooklyn and is “head over heels” for Jarrod.
After heavy touring, the Honorary Title released Scream and Light Up The Sky in 2007.
In late 2007, Aaron Kamstra left the band because of the constant touring schedule.
She was incredibly shocked by those pictures of Kristen with Rupert and couldn't understand why anyone would want to cheat on her son," an insider told Look magazine.
Robert Pattinson has been tough to miss ever since breaking out in 2008's "Twilight" as a hunky vampire.
A source told the New York Post newspaper: "Kelly is head-over-heels.
She just moved in with him in Brooklyn."The besotted couple were recently spotted having dinner with Kelly's friend Jonathan Cheban at New York's Uncle Jack's Steakhouse.
The TV star, the daughter of rocker Ozzy and Sharon Osbourne, has embarked on a whirlwind romance with Jarrod Gorbel, lead singer of New York indie band The Honorary Title.
Although the pair have only been dating for two months, Kelly has moved into Jarrod's New York home.
However, the ceremony was not legally binding and the couple split in January.