Joshua Harris, author of the popular evangelical best-seller “I Kissed Dating Goodbye,” which he has since denounced, declared Friday he has bid adieu to his Christian faith.

Days after announcing via Instagram he and his wife would be permanently separating, Harris, known in the early 2000s as something of a relationship guru, said he is “not a Christian” anymore.

“I have undergone a massive shift in regard to my faith in Jesus,” he wrote. “The popular phrase for this is ‘deconstruction,’ the biblical phrase is ‘falling away.’ By all the measurements that I have for defining a Christian, I am not a Christian.”

The now-controversial author said he is receptive to “a different way to practice faith,” though he is admittedly “not there now.”

Harris also used the post to issue an apology to and to announce his support for the LGBTQ community. He credited his erstwhile perspectives to his “self-righteousness” and “fear-based approach to life.”

Last fall, the 44-year-old author and former pastor decried his past writings, saying he “no longer agree[s] with its central idea that dating should be avoided,” referring to his book “I Kissed Dating Goodbye,” which was popular in conservative Christian circles.

Harris also said he had reached an agreement with the book’s publisher to pull the book from production. The book, which Harris wrote when he was only 20 years old, will no longer be in printed after the current copies in circulation have been sold.

According to young people we have spoken with, The book “I Kissed dating Goodbye” saved many of them from bad relationships.

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“Many a star that we have admired for its brilliance will then go out in darkness” —Prophets and Kings, 188 (c. 1914).