In an alternate timeline, Palpatine did indeed fulfill his promise..
Vader: Padme! I saved you!
Padme: Who are you?
Vader: It’s me… (removing helmet)
Vader: …Anakin!
Padme: YUCK! We are through.
Vader: But we’re married! But I’m your husband!
Padme: But nobody knows about that, and I’m sure not going to start telling people now. You’re face is busted!
Padme: I’m leaving you for my former bodyguard, Captain Panaka.
Panaka: And the one thing I won’t be guarding that body from is… ME!
Padme: How do you feel about dating a woman with kids?
Vader: NOOOOOOOOOOOOO!
