Jennifer Lopez and Marc Anthony. (FRED PROUSER/REUTERS)

“People are trying to peg it on things because it was so shocking. It was like, it must have been something,” Anthony said of the split to “Nightline.”

“It wasn't something sensationalistic.”

Indeed, he told ABC’s John Quinones that the marriage simply didn’t work anymore.

“It was a realization on both our parts. So you know it wasn’t shocking. These things happen,” he said. ”It was a decision that we made jointly.”

Anthony and Lopez announced their split in July, saying in a statement, “We have come to an amicable conclusion on all matters.”

Tabloids have reported that Anthony cheated on Lopez with a number of people, from an airline stewardess to his “HawthoRNe” co-star Jada Pinkett-Smith. (At the moment, she and Will Smith are having their own issues with the gossip mags.)

“It was a flight attendant, it was the pilot — I heard it was this guy sitting next to me in a rehab in Houston. I've heard it all,” he said of the cheating rumors.

The 42-year-old said he’ll always love Lopez, the mother of his twins: “Even though we’re not together, this story’s not over. There’s life to see together through Max and Emme.”

Lopez addressed the breakup in vaguer terms to Vanity Fair: “Sometimes [a relationship] doesn’t work—and that’s sad.”

The full interview airs Thursday on “Nightline.” Watch a clip below.