Troy Mercanti, a former member of the Coffin Cheaters and now a Fink, is charged with five counts of assaults on his long-time partner Tammy Kingdon, which allegedly left her with a broken eye socket, two sets of broken ribs and countless cuts and bruises.

Prosecutor Justin Whalley told the West Australian District Court on Tuesday that Mercanti, 45, had also urinated on Ms Kingdon, threatened to tie her with gaffer tape to a tree to stop her attending her sister's wedding and ordered her to lie on a dog bed and bark.

Mr Whalley told the jury that after the pair had met in Kalgoorlie in the late 1990s, where Ms Kingdon was working as a skimpy barmaid, she had "doomed herself'' to years of abuse in the violent relationship.

Mercanti is alleged to have seriously injured Ms Kingdon first in 1997, when he punched her in the face outside a hotel in Bunbury, leaving her with black eyes and a fractured eye socket that required a metal plate to heal.

The pair continued their relationship, and Ms Kingdon gave birth to two boys by Mercanti in the following four years.

Mr Whalley said Mercanti punched her again in 2002, leaving a facial cut that needed stitches, and launched a prolonged assault on Christmas Day 2006 which left her missing a tooth.

In 2011, he allegedly punched and kicked her and made her stand naked in front of their Duncraig house after an argument following a sex party involving a friend of Mercanti's.

Following an alleged beating in January 2012, when with broken ribs, she was left naked and cowering outside a neighbour's home, Ms Kingdon went to police and made a statement that stretched to 104 pages.

But defence barrister Colin Lovitt QC told the jury that rather than being a battered woman, Ms Kingdon was enamoured with Mercanti's lifestyle and reputation, and was herself "angry, abusive, hysterical and very accident prone''.

Mr Lovitt said the pair's relationship was characterised by verbal abuse from both sides, but they returned to each other "like moths to a flame''.

"He bought her everything, and she loved it and kept coming back for more,'' Mr Lovitt said.

"They had fights galore, they had sex galore, and the making-up for them was the best part.''

Mr Lovitt said Ms Kingdon had invented the string of violent incidents to suit her desire to leave the relationship with Mercanti and retain custody of her children.

The missing tooth was caused by a fall down stairs, and the 1997 assault which broke Ms Kingdon's eye socket was at the hand of someone else, Mr Lovitt said.

The trial continues.

Troy Mercanti, a former member of the Coffin Cheaters and now a Fink, is charged with five counts of assaults on his long-time partner Tammy Kingdon, which allegedly left her with a broken eye socket, two sets of broken ribs and countless cuts and bruises.

Prosecutor Justin Whalley told the West Australian District Court on Tuesday that Mercanti, 45, had also urinated on Ms Kingdon, threatened to tie her with gaffer tape to a tree to stop her attending her sister's wedding and ordered her to lie on a dog bed and bark.

Mr Whalley told the jury that after the pair had met in Kalgoorlie in the late 1990s, where Ms Kingdon was working as a skimpy barmaid, she had "doomed herself'' to years of abuse in the violent relationship.

Mercanti is alleged to have seriously injured Ms Kingdon first in 1997, when he punched her in the face outside a hotel in Bunbury, leaving her with black eyes and a fractured eye socket that required a metal plate to heal.

The pair continued their relationship, and Ms Kingdon gave birth to two boys by Mercanti in the following four years.

Mr Whalley said Mercanti punched her again in 2002, leaving a facial cut that needed stitches, and launched a prolonged assault on Christmas Day 2006 which left her missing a tooth.

In 2011, he allegedly punched and kicked her and made her stand naked in front of their Duncraig house after an argument following a sex party involving a friend of Mercanti's.

Following an alleged beating in January 2012, when with broken ribs, she was left naked and cowering outside a neighbour's home, Ms Kingdon went to police and made a statement that stretched to 104 pages.

But defence barrister Colin Lovitt QC told the jury that rather than being a battered woman, Ms Kingdon was enamoured with Mercanti's lifestyle and reputation, and was herself "angry, abusive, hysterical and very accident prone''.

Mr Lovitt said the pair's relationship was characterised by verbal abuse from both sides, but they returned to each other "like moths to a flame''.

"He bought her everything, and she loved it and kept coming back for more,'' Mr Lovitt said.

"They had fights galore, they had sex galore, and the making-up for them was the best part.''

Mr Lovitt said Ms Kingdon had invented the string of violent incidents to suit her desire to leave the relationship with Mercanti and retain custody of her children.

The missing tooth was caused by a fall down stairs, and the 1997 assault which broke Ms Kingdon's eye socket was at the hand of someone else, Mr Lovitt said.

The trial continues.