What an ugly and sad end. She sounds like a case study from The Sociopath Next Door. It might actually be easier to get through heart surgery alone than with her. Maybe it'll be easier to get through med school and residency without a relationship at all, let alone this painful one.I hope you have other family or friends who can be relied upon. And when the time is right, I bet you will be an excellent and loyal husband to someone who has the capacity to love others.