Motley Crue guitarist Mick Mars is being sued by his ex-girlfriend for $10 million (£5.4 million), claiming he broke a promise to take care of her.
Motley Crue pictured in 1994, with Mick Mars (third left)
The woman, Robin Mantooth, said Mars promised her repeatedly that he would provide financial support in the event of the couple breaking up.
When they split in December, Mantooth says Mars denied any such agreement.
She is asking a Los Angeles court to award her half the musician's property, a monthly allowance and damages.
Mantooth added that the pair became lovers in 1990, after which she abandoned her career as a documentary film-maker to move in with the guitarist at his Malibu home.
She is also claiming that Mars, 53, has failed to provide her with any material support since they ceased to be a couple.
Motley Crue recently reunited after being apart for a period of five years.
They originally formed in the early 1980s and scored six hits in the UK, including Girls Girls Girls in 1987.
They are embarking on a world tour later this year which will take in 60 cities across the US, Europe, Asia and Australia.
Mars - real name Bob Allen Deal - underwent hip replacement surgery in October.
He suffers from a degenerative rheumatic disease which causes ligaments and tendons to attach to the bone.