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It doesn't necessarily mean that person is going to bolt, that's an over-generalization IMHO.




They are not nesessarily going to bolt although it does happen at least half of the time.
The point is, it's not the betrayaed partner's fault.
Unless s/he was an addict, violent one or was screwing around, collapse of the M is most likely to be caused by the affair itself, even if it started innocently (or especially if it started innocently), than by the spouse's shortcomings.

SO stop blaming yourself in case you are doing this;
and look at it this way: it's good that there're some tangible things that you can blame yourself for. It might just as well be the case where there's absolutely nothing wrong with the spouse; done, said or felt, and yet s/he was betrayed and desperately look for flaws within that don't even exist.

To get through the darkest period of the night, act as if it is already morning. The Talmud