Photo: radaronline.com

Someday, Leann Rimes will have something better to talk about other than rehab . . . or why she and Eddie Cibrian started thier affair.

In the meantime, she covered those two subjects again on last night's "E! Special:  LeAnn Rimes".

About the adultery, she said, quote, "I wish I handled it differently because I wish I could have been better for me, for Brandi, for Dean (her ex), for Eddie, for everyone else.

"I know, in this situation, it's going to take some time.  All I wish is that everyone that was hurt, that we hurt, that I hurt, can be happy."

As far as WHY she knew it was time to enter rehab, she said, quote, "When you look around and you go 'I'm crying, like, uncontrollably, no one can help me,' that's when I knew I had to seek help.

"I was incredibly depressed and not quite sure of who I was."