the problems may be more deep-seated (iceberg phenomenon). you both need marital counseling to assess it further. consult with a psychiatrist/psychologist who handles such cases.

Relationships can be very complicated. At the surface level it might seem that the destination wedding comparison was the issue, however, most of the reasons are quiet in depth. Ending of a 6 years relationship can be extremely painful especially if you have not received answers to the questions that you have. However, it is not always possible to get the answers that we are looking for especially if the other person is not ready to answer them. You need to find a way to attain closure. Assistance of a qualified psychologist might help in the same.

But why is she comparing only and asking to get separated on such a shallow issue.....ponder in that