Female serial killer Joanna Dennehy has launched a legal bid to marry her lesbian lover in prison – and wants tax payer cash to do it.

Despite being inside for murdering three men in ten days in 2013, Dennehy, 35, will demand she gets to spend time with her jailbird lover.

Dennehy is in a segregation unit at Category A HMP Bronzefield after reportedly attempting to kill herself – along with her fiancée, Daily Mail reports.

However, she has already contacted solicitors over her planned nuptials, it is reported.

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To fund her bid to marry she is also applying for legal aid.

Serial killer Joanna Dennehy was previously linked to other women in jail - despite luring men to their deaths using sex. Photo / Supplied
Serial killer Joanna Dennehy was previously linked to other women in jail - despite luring men to their deaths using sex. Photo / Supplied

A source told The Sunday People: "Dennehy's lover seems to go for killers. She's had another ­girlfriend in the past who was also inside for murder.

"Now the two are launching a legal battle to get the righ to spend time ­together, come what may."

Prison bosses want her moved to a psychiatric unit but reports of a new legal battle would indicate she will put up a fight to remain with her girlfriend.

The pair both attempted to take their own lives together in a strange suicide pact, it is believed.

Both were taken to hospital but returned to prison.

A source previously told The Sun: "When the guards found them they were entwined on the floor, which was covered in blood.

"They think they need splitting up now to make sure it doesn't happen again."

Joanna Dennehy killed three men and said it was 'fun' but now wants to get married and fight the prison system to stay with her lover. Photo / Supplied
Joanna Dennehy killed three men and said it was 'fun' but now wants to get married and fight the prison system to stay with her lover. Photo / Supplied

Dennehy, originally from Peterborough, is one of only two female prisoners serving a whole life sentence in the UK.

After killing Lukasz Slaboszewski, 31, a Polish national, her landlord and lover Kevin Lee, 48 and 56-year-old Falklands veteran John Chapman Dennehy called killing "fun".

Her victims' bodies were found in ditches in Cambridgeshire, with one of them being found in a sequined dress.

Dennehy was previously linked to another woman after reports she was "besotted" with an ex-convict she met in her prison gym.

The killer was even handed a ring by former university lecturer Alexandra Crouzieres that led to the latter being banned from visiting Dennehy for three months.

Sources say Dennehy, 35, and 37-year-old Crouzieres, who was inside Surrey's Bronzefield women's jail for racially abusing a doctor and attacking three police officers, started an "intense friendship" behind bars.

A prison spokesman said he could not comment on individual prisoners.