"She was a snoop. The times I left her alone in my apartment she’d go through my things. My financial records, which I keep in a filing cabinet, my dresser drawers, my closets. I only discovered that she did it when she slipped-up and revealed information she’d only have if she snooped."
LiterallyOuttoLunch
That is something I will never understand.
There is this thing called infatuation - it is like a drug that makes people almost unable to find minor faults with each other until it is over, it can last for between 1 and 3 years. All the redflags are obvious in hindsight or from neutral observers perspective, also if someone was burned previously they will learn to spot the early signs out of necessity.