Christopher Ciccone is now promoting his book about older sister Madonna and he is more than eager to elaborate on tidbits from his unauthorized memoir as well as to fuel the gossip concerning Madonna’s alleged relationship with Alex Rodriguez.

Christopher Ciccone, two years Madonna’s junior, was on ABC’s “Good Morning America” to promote his unauthorized biography of his older and immensely famous sister, “Life with My Sister Madonna.”

He told host Deborah Roberts a number of things about the perspective he has on his relationship with Madonna, why they drifted apart, how she has incorporated Kabbalah into her life and whether or not she had anything to do with the break-up between Alex and Cynthia Rodriguez.

Christopher Ciccone sounded bitter and disappointed Monday on “Good Morning America” as he explained that a big part in his estrangement from sister Madonna was Guy Ritchie’s doing. Ciccone is gay and he says Ritchie is homophobic. “We both couldn’t exist in the same hemisphere,” he said.

This is a far cry from the close relationship he once had with his older sister. Beginning with the mid 1980s, he worked for her on tours, designing and directing her Girlie Show tour in 1993, working as artistic director of her 1991 documentary, Madonna: Truth or Dare, and generally assisting her.

In his book, which is released today, he also writes that “the death knell” of their bond was sounded by Ritchie.

In “Life with My Sister Madonna” he also writes that she and Guy Ritchie are “passionately committed” to staying married, with the help of Kabbalah, a commitment he reiterated Monday on the show, saying Madonna is “not the kind of person to walk away,” who will likely “do what’s best for the family and her kids” and “do her best to maintain the marriage and keep it going.”

As to rumors that she may have had a part in the break-up of Yankees star Alex Rodriguez from wife of five years Cynthia Rodriguez, Ciccone commented that while the slugger is Madonna’s “type,” she is still a “Catholic girl” and he considers it “highly unlikely” that she had anything to do with the marriage’s dissolution.

After venting some more of his frustration and jealousy, Ciccone also remembered to emphasize that he is not seeking revenge on his sister or brother-in-law. “I’m not taking revenge, not at all. I’m telling what I consider to be a great tale.”

Without permission from the tale’s main characters, without respect for their privacy and their feelings for that matter (for now he voices critical opinions he kept to himself along the years).

Madonna and Guy Ritchie have been married for seven years now and are parents to Lourdes, 11, Rocco, 7 and 2-year-old David Banda, whose adoption was approved by a Malawi judge earlier this year.

The couple has been insistently reported to be splitting over the past several weeks. Repeated denials from Madonna’s camp have not slowed down the speculation.

In early July, Madonna personally denied having any influence on Alex Rodriguez’s marriage or his spiritual beliefs, stating she has “nothing to do with the state of his marriage or what spiritual path he may choose to study.”