Characters
I can’t go all my life waiting to catch you between husbands.
— Rhett Butler ‧ Gone with the Wind

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker refuses a future spent waiting for gaps between somebody else’s marriages. Between husbands turns those gaps into a recurring condition, while the reference to an entire life gives the complaint its scale. The line draws a limit around waiting, without establishing what happens after it is spoken.
Context reviewed