How are Demi Moore, Ashton Kutcher, and Bruce Willis related?

Question

I'm asking because I saw this picture. Read the caption under it.

http://omg.yahoo.com/photos/week-in-photos-august-17-23-2008/2224?nc#id=9

Answer 1

Demi Moore is Bruce Willis ex 1st wife will Aston Kutcher is is 2nd wife.

Answer 2

demi moore is married to ashton kutcher and bruce willis is demi moore's ex husband whom she had her kids with

Answer 3

Bruce Willis and Demi Moore were married and had three children. They got divorced, and now Demi is married to Ashton Kutcher.

The three of them always hang out, which I think would be awkward, but kudos to them if they can make it work!