What would you find more difficult to forgive your spouse/partner for? And why?

1. They have a casual fling.  Maybe something that happened one drunken night at a conference. They confess all.  Apologize. Swear it meant nothing and will never happen again.

2. They had a long-term love affair. Fell in love with a co-worker or something, carried on for a year or so, but it’s all over now.  The other person is gone.  They Apologize.  Swear it will never happen again.