I love this! I have heard some of these too, but here are a few that my H fed to me.
"We're soulmates"
"We're like...the same person" (uh-huh)
"She is the one keeping our marriage together." (uh...what??!!)
Then there is the usual "We're just friends" Do you usually go away with your friends, lie about it, take your booby oil and kama sutra sensous massage oil and various sex toys, then insist that nothing happened and that she slept on the couch in your shared hotel room?
Since my H has multiple affairs with different women at the same time, encouraged by his EA OW, I have found some strange things in the house. A framed glamour photo of one of his wh#res which he says is the picture that came with the frame. Yeah, cheap frames always come with a professionally done photo with the studio name on the back.