I agree with you. She won't just end it becaues LG agrees to stop snooping. I snooped (in fact I didn't snoop I had a legitimate reason to be looking at the cell phone bills and it just kind of jumped out at me) but anyhow I found out and once I knew I knew. The fact is LG knows. She won't just dump OM. It will take a lot of basic DB work on LG's part to get her to the place where she is ready to dump OM. While this is going on LG has no need to snoop. He is just taking care of his own business until she feels ready to come back to the fold. His good - nay exemplary - behaviour is likely to guilt trip her out so that she will be contrite. That is the point when he accepts her apology and he still has no need to snoop. Unless he "feels" there is something wrong.
If he DOES snoop, then he keeps his info to himself. And here I do really agree with you because forewarned is forearmed. He just has no need to use the results of his snooping to control or threaten her. Just to keep himself informed. If she carries on lying he does not say "I know you're lying because....." he just says "oh". But he knows what he knows.
LG: Cac is right you do give away too much personal info here. Keep anonymous, it makes no difference to us, but like Cac says (and NOP has experience of) you don't know who else is lurking here.
Fran
if we can be sufficient to ourselves, we need fear no entangling webs Erica Jong