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Soon-to-be-former South Carolina Gov. Mark Sanford first came up missing, then his staff explained that he was hiking alone on the Appalachian Trail, then earlier today came word she was cruising off the coast of Argentina. Now, the truth.

Yes, it’s another woman.

From CNN:

South Carolina Gov. Mark Sanford admitted Wednesday, amid speculation over his whereabouts for the last several days, that he has been engaged in an extramarital affair with an Argentinian woman.

“I’ve been unfaithful to my wife,” Sanford told a news conference in Columbia, the state capital. “I developed a relationship with what started as a dear, dear friend from Argentina.”

His voice choking at times, Sanford apologized to his wife and four sons, his staff and supporters, and said he would resign immediately as head of the Republican Governors Association. The affair was discovered five months ago, Sanford said.

Watch the video of his admission from a live news conference after the jump: