Marc Anthony Speaks: I Never Cheated On J.Lo!

Marc Anthony says he'll "always love" Jennifer Lopez -- and wants everyone to know he NEVER, EVER cheated on her with any flight attendants.

The singer opened up about his divorce from Jennifer Lopez for the first time today on "Good Morning America," saying "nothing sensationalistic" happened to tear the two apart and there was no infidelity.

He says their split was just "a realization on both our parts ... these things happen."

Anthony had only good things to say about his estranged wife ... saying, "I'll always love Jennifer ... and she knows that, it's important that she knows it and so do my kids."