Lindsay Lohan's current mood is "betrayed" (cue angry emoticon), and she's not going to take it anymore.

In a blog post published on her MySpace page late Wednesday night, the actress lashed out at her estranged father, Michael, calling him "a public embarrassment and a bully" for speaking to celebrity gossip site X17Online.com and accusing Lohan's reported girlfriend, DJ Samantha Ronson, of using his daughter to vault herself to fame.

"If you have something to say to me, say it to my face -- that's what I have believed my whole life. Don't be a coward and say it to others first, let alone all the media in the world. I think we know where the rest of this blog is going. If you guessed it had to do with my father, then you guessed right," Lohan wrote in the post. "It really hurts because I have tried -- after all that my mother and siblings have gone through, I really tried to make things work, for the hope of having a father again. ... Having said that, the people were right, and he is yet to change. But this time, without his daughter by his side, 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 (it's obvious who that is).

"He has no idea what is going on in my life because I have chosen not to involve him in it. His recent attack on my life and my loved ones is simply for an ADDICTION THAT HE HAS -- FAME. Why he feels the need to comment on anything in my life that I may want to keep private is beyond comprehension," she continued. "If he really cared about me and my life, then he would learn to respect my wishes by staying out of it. Samantha has and would never sell me out. Nor has my mother, who is wonderful. ... I'm not going to engage any further, though I probably could go on. I have said enough. I have a therapist, and it is not the cameraman at X17."

Lohan wasn't the only one getting in on the blogging. Ronson also weighed in on the situation with a post on her MySpace page, which she titled "SHUT THE F--- UP."

"I really don't want to say anything because I feel like he wins -- he being the man who is so desperate for attention that he goes to the media whenever possible. I was angry when I first read his attack on me, but ... I believe that actions speak louder than words, so now I just pity him," she wrote. "I feel no need to publicly defend my role in Lindsay's life. I'm just sorry that she likes me more than him. p.s. I'm not the one that is so lost that I need to use my relationship with Lindsay to earn a living."

Of course, none of this e-gression went unchecked by Michael Lohan, who gave a lengthy response to -- who else? -- X17, in which he wrote that he had no problem with his daughter's relationship with Ronson, saying that it was his ex-wife Dina who took issue with the couple.

"The response by Samantha and Lindsay regarding what I said is absolutely ridiculous. When I first spoke to X17, I clearly started that everything I said and my concerns were generated by my ex-wife, Dina (I have taped recordings, texts and the corroboration from lawyers and authorities to prove it)," he wrote. "All I want is for Lindsay to be healthy and in a good relationship. I want her to use the gifts she has in the best ways and to help others. I said it from the very beginning: Show me who you walk with, and I will tell you who you are! People may deceive us, but our eyes and facts don't! OPEN YOUR EYES!!!"

Then, just hours later -- in a move that perhaps only confirmed everything Lindsay had written -- her father was back on X17 again, this time to announce that his father (and LiLo's paternal grandfather) had just passed away after a lengthy bout with colon cancer.

"My father just, literally, died in my arms. I notified all my kids, and my lawyer notified Dina's attorney," he wrote. "Let's see if she has the decency and respect to bring my kids to the wake and funeral. THIS will show her true colors."