Sinead O'Connor Reunites With Fourth Husband Barry Herridge

Sinead O'Connor's marriage to therapist Barry Herridge is back on, little more than a week after she called off the brief 16-day union.

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Given to online oversharing, O'Connor announced on her Twitter page Tuesday night that she and Herridge had reunited.

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"Yay!!! we decided to be boyfriend and girlfriend again an stay married but we did rush so we gonna return to b friend g friend," she posted, grammatical errors and all.

O'Connor, 45, married Herridge in a kitschy Dec. 8 Las Vegas ceremony but the newlywedded bliss quickly wore off: she confirmed a breakup on her official website the day after Christmas.

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"Within three hours of the ceremony being over the marriage was kyboshed by the behaviour of certain people in my husband's life," she wrote. "And also by a bit of a wild ride I took us on looking for a bit of a smoke of weed for me wedding night as I don't drink."

This was -- nay, still is -- O'Connor's fourth marriage. She'd previously wed music producer John Reynolds, journalist Nicholas Sommerlad and musician Steve Cooney -- with whom she split with in April.

O'Connor has four children.