Lindsay Lohan and Samantha Ronson They seem like such a cute couple.

But someone's got the verbal knife out for Samatha Ronson and Lindsay Lohan.

And it's not the first time he's had a dig.

Despite her repeated pleas for him to hush up, Lindsay's dad, Michael Lohan, just can't seem to stop airing his opinions on his daughter's personal life.

He's really got it in for her girlfriend Sam - and like a dog with a bone, he won't let up.

"Samantha lives a life that I don't approve of," Michael moaned in his latest rant to Heat magazine.

"I absolutely do not accept Lindsay's relationship with Samantha. I know Sam's history and wMichael Lohanhat is going on."

This isn't the first time Michael's voiced his disapproval of Sam, but the DJ seems more than capable of standing up for herself, hitting back on her MySpace blog by commenting that it's sad how Li-Lo cares more about her (Sam) than her own father.

Michael is stubborn in the face of such criticism, however, saying:

"I'm doing all I can to help Lindsay and if people want to slay me, then so be it. I'm her father first, not her friend."

We feel this won't be a feud that goes away quietly...