I am very much in two minds about whether to do this. Even by telling her that I know about the vacation, I will disclose the fact that I have been snooping. She will have no idea how I got the information (she's in a different country and has never told me anything about OM other than his nationality). She'll probably feel very, very awkward.
I take full responsibility for this breakup, and if this A did in fact begin after the separation then fair enough, but I don't see how this can work if she plans to come back to me less than 24 hours after being with OM. This just doesn't make sense - she is definitely in a chemically altered state.
I am sure that there will be more lies.
Me: 46 W: 46 T: 23 M: 20 DS12 DD11 DS5
W left: 01/28/08 Discovered OM: 02/26/08 W back for 9 days: 04/08 W returned 05/21/08 EA/PA - 01/08-07/09 W's MLC 2008-2014 (realised this much later)