The drama between Michael Lohan and his ex-girlfriend Erin Muller continues...this time in the form of an alleged naked romp in the sheets.

Michael spoke to X17online exclusively about a sex tape that he believes Erin is trying to sell of the two of them.

But that's not the only pornographic content his ex plays a staring role in ... Lohan tells us: "I found things on the computer you wouldn't believe -- pictures she took with other men..."

Watch the interview below:





Tomorrow, we'll hear Michael's thoughts about his daughter Lindsay...and where he thinks her career is heading. Plus he'll discuss his current relationship with ex-wife Dina and how, despite reports, they're continuing to raise their kids together.

Stay tuned...