If it all crashes and burns,
Nat will land on her feet. running, and never look back.
Reasons are...
1: She became a cheating whore at the first sign of marital problems.
2: Ethan through his insecurities blamed her for cheating and became cold and vindictive, thus triggering her emotional revenge.
3: Ethan opened Pandora's box forcing her to embrace his cuckolding fantasy.
And...
4: Once she goes black, she can't go back, or wants to.
Or maybe Nat would be game to share the bed with Darrel's other women! Remember her kissing Jenna?