The Come To My Window hit-maker ended her nine-year romance with Michaels in April 2010, and the break-up turned messy last summer as they battled over finances and custody of their four-year-old twins, Johnnie Rose and Miller.
Etheridge has found love again with TV writer Linda Wallem, who ironically acted as 'best man' at the pair's wedding in 2003, and after news of the relationship broke on Tuesday, Michaels took to her blog to claim in poet-like prose that Etheridge has long harbored feelings for the Nurse Jackie creator.
She writes, "One never even said one was breaking up with me. One only says things in song and string. And then I listened to the album and I understood... you don't want to work it out... You already have someone in the wings... You already have pined for another. You are done here."
"I moved out November 23, 2009. She said it would help. I was convinced it would too and I trusted there was no-one else. I didn't know there was someone moving in as I was moving out."
And Michaels reveals she grew suspicious that Etheridge was planning to end their relationship after a box of sex toys were sent to her home by mistake.
She adds, "Three weeks later a box of new toys was delivered and her assistant brought it to my rental house as a mistake. I opened it and that's when I felt something was up."