A THUG scarred his lover for life after smashing her head with a glass object.

Christopher Milligan, 35, turned on his partner at a flat in Glasgow’s Thornliebank on September 1, 2019.

Milligan lashed out after she intervened on him attacking her younger sister.

The victim needed eight stitches for her head wound while her sister suffered bruising to her face.

Milligan pleaded guilty today at Glasgow Sheriff Court to assaulting his lover to her injury and permanent disfigurement.

He also admitted the assault to the victim’s sister's injury and will be sentenced next month.

The court heard that Milligan and his partner were an "on-off" couple that was together for two years before the incident.

The trio was at a friend’s house drinking alcohol before an argument broke out.

Milligan then brandished a kitchen knife towards his partner's sister.

Prosecutor Mark Allan said: “The victim heard the disturbance and entered the room to see Milligan on top of her sister repeatedly punching her head.

“She intervened to push Milligan away but he struck her to the head with a glass object.

“This left her bleeding from her head before Milligan departed the scene.”

The women were taken to Queen Elizabeth University Hospital for treatment.

Mr Allan said: “The victim had a 4.5cm wound to the right side of her forehead which was closed by eight stitches.

“It will leave a permanent scar on her head.

“Her sister had a one-centimetre wound on her head and needed two stitches on her scalp.

“She also had bruising to her forehead and cheekbones.”

Neal McShane, defending, told the court: “He asked me to say he is ashamed by what occurred.”

Sheriff Iain Fleming remanded Milligan in custody pending background reports.