AITA for canceling our mortgage after my girlfriend added her brother to our house paperwork?

My girlfriend told me to “stay quiet and let the educated people talk” during a private meeting at the bank. Her uncle laughed when I questioned the paperwork. 5 minutes later, I stopped the escrow transfer, withdrew from our mortgage application, and asked the bank manager why my girlfriend’s brother was listed on documents for our house. ---------------🦖D - Stories🦖--------------- #reddit #stories #redditstories