'Coronation Street' actors Tina O'Brien and Ryan Thomas have split up.

The couple - who met when they played on-screen lovers Sarah-Louise Platt and Jason Grimshaw on the ITV soap - have reportedly ended their six-year relationship after a series of arguments.

A source told The People newspaper: "Their on-screen relationship and their off-set one isn't much different.

"They bicker and shout. It's a terrible end to their relationship."

Tina and Ryan began dating in 2003 and have daughter Scarlett, born in October last year, but unrest between the couple - including a fight over an alleged infidelity - recently came to a head after Ryan, 25, was questioned by police over an early morning car crash.

Tina, 26, was said to be "absolutely livid" after Ryan's Chrysler collided with a lamp-post in Manchester at 4am last Saturday (31.10.09), despite the fact he wasn't driving.

Police arrested another man and charged him with driving under the influence of drink or drugs.

A source said: "Tina was furious when she found out about the crash. She believes he hasn't grown up since having the baby and still acts like a jack-the-lad."

The crash came just days after Ryan got his driving licence back following a 21-day ban for speeding at 110mph on the M6 motorway.

Tina - who is rumoured to be returning to 'Coronation Street' next year for its 50th anniversary - has moved out of the family home in Cheshire with Scarlett and changed her Facebook relationship status to 'single'.