lindsay lohan and samantha ronsonLindsay Lohan’s dad has hinted that he’ll reveal a big bad secret about Lindsay’s girlfriend Samantha Ronson if either Lindsay or Samantha criticise him publicly one more time.

Michael, who has previously called DJ Sam “evil” and accused her of using Lindsay to gain celebrity, made the claims to TMZ after Lindsay’s Christmas blog post criticising him for having an affair while he was still married to her mum Dina Lohan and producing a love child (although DNA tests have yet to confirm that the girl is his daughter).

Michael told the gossip site that he believes Samantha was behind the message - and has been behind Lindsay’s previous posts criticising her dad: “If one more blog or statement is made people will know the entire truth.

“I will release emails, texts, depositions and audio tapes that will prove everything I have been saying all along.

“If Sam wants to play, I am ready. But she better be ready too!”

He added that he is desperately worried that the relationship will send Lindsay hurtling back to her wild partying ways - and destroy what’s left of her career: “What real work has Lindsay done since Sam? Maybe she should follow Britney Spears‘ path and get rid of the darkness and come into the light.”

Lindsay and Michael have been largely estranged since 2005 when Michael was imprisoned on drug and drunk-driving charges. They briefly reconciled during her third rehab stint in late 2007 but fell out again over Lindsay’s relationship with Samantha.