What are things you can easily dump a partner for vs if you're married with kids?

Every single relationship has their own issues. What are things you can and would easily dump them if you're just dating (girlfriend and boyfriend stage) and have no real obligations such as kids and sharing assets vs if married with kids?

For instance a girl doing a a fake pregnancy prank when she's just a girlfriend and no kids would already get dumped meanwhile a wife doing "I'm pregnant again" prank (they already have a child) will likely get a reprimand and told it's not funny at all.

What are things you can easily dump a partner for vs if you're married with kids?
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