Her sister said everything that happened is my fault. It's fault for being cheated on. It's my fault for being lied to for 3 years. It's my fault for staying because I couldn't make sense of what was going on. It's my fault for caring for her when she had no one else. It's my fault for all of the abuse. It's my fault because she told me to run ( her sister, never once did she tell me to because not even she knew). It's my fault for her erratic unexplainable behavior. It's my fault that she got worse with time for no reason. It's my fault for being used because I cared. It's all my fault. I'm the reason she ruined her own life and with someone she "she truly trusted and loved". Even the family circle is rotten. Run. Just fucking run bro. Don't explain anything. Leave in the middle of the night when it's safest. Don't martyr yourself any further.