Of course she’s tortured by regret. She made the biggest mistake of her life when she ended her marriage with Nick Lachey in 2005. She totally thought she was at the top of her game, so she assumed she could get better. It’s only too late that she is realizing that it doesn’t get much better than Nick Lachey. Am I right, ladies?

All she’s done is relationship-jump from high profile failed attempts to the next unattainable celeb (Bam Margera, Johnny Knoxville, Owen Wilson, John Mayer, Tony Romo, Adam Levine, Orlando Bloom).

“There are definitely parts of her that regret breaking up with Nick now,” a Simpson friend tells Us Weekly in its new cover story. And that regret is starting to show. A source tells Us the singer spent October 26 (what would have been her fifth wedding anniversary) “looking through old photo albums that she made when she was with Nick…she said she was just being ‘girlie,’ but she was definitely somber.”

Too little, too late, lady. TEAM LACHEY!