Like the title says,

Everything was going great. She was madly in love with me and we even bought a house together. Somewhere something flipped in her head and she turned into a completely different person. I'm talking went from loving and caring to a complete rotten piece of shit. Showed all the red flags of literally every mental disorder (BPD, NPD, etc.)

She had a mental breakdown over nothing one day and left to live with her sister for a "couple of days". It's now been going on two months and she is showing no remorse for single handedly destroying our marriage. I kept a cool head through out this entire shit show and gave her time and space, also tried talking to her but apparently "this is how I feel and nothing will change it".

I eventually found out that she's been talking to men behind my back from her work and calling them when I left the house. All signs point to cheating but of course she will never admit it.

She left me with the mortgage, over $10k of credit card debt and all the bills and utilities. I'm paying for all of it and have kept good documentation. I'm going to file for divorce but need advice on how to proceed. Of course I'll get a lawyer but would like to hear some feedback from someone who dealt with this shit before.

TLDR; Married a crazy bitch and headed towards divorce less than a year later. Bought a house that I'm paying for and need advice on how to proceed with the least amount of damage to myself financially. Also want to keep the house that I have been the sole care taker and mortgage payer of.