He has a reason to be mad. That's his gig!

Well, Samantha and Lindsay took to the Internet to blog about how full Michael Lohan is of it.

"He has become a public embarrassment and a bully—to my family, my co-workers, my friends and a girl that means the world to me," Lindsay wrote on her MySpace blog.

Lohan listed her "mood" as "betrayed" and insists that Ronson would "never sell me out.

Ronson chimed in on her own blog, describing her possible future father-in-law as "so desperate for attention that he goes to the media whenever possible."  Ronson also denied that she's writing a memoir.

That's going to be one hell of a tense gay wedding.