Evolution of an idea

Three weeks ago
Prudence: That is my scarf! You nicked it!
Beloved: No it's not, it's mine!

Two weeks ago
Prudence: What a lovely scarf, wherever did you get it?
Beloved: I stole it from my wife.

Yesterday
Prudence: I see you really like that scarf...
Beloved: Yes, my wife lends it to me, she has excellent taste.