Bag of beans

A man asks his wife about
a mysterious bag of
beans in the kitchen.
MAN: Honey where did
this bag of beans come
from?
WIFE: Honey I'm sorry
please forgive me...I've
been unfaithful to you.
MAN: Honey, I know and
I've already forgiven you,
but what has that got to
do with the bag of beans?
WIFE: Well...when I
started cheating on
you...every time I've been
with a different man, I
took a bean seed from his
house and put it in that
bag and it was empty
when I started.
What should he do?