Can Chantix alter someone's memory?

Hi doctor,

I started taking Chantix to quit smoking for around three months now. The side effects I noticed were vivid dreams and becoming more withdrawn. Two months back, my girlfriend and I got into a domestic dispute. My honest memory of this incident is that she started verbally abusing me from the bedroom while I was in the kitchen. She then came out and started pulling my hair. I tried to leave, but she kept physically blocking me from the door. We argued for hours until she finally got out of the way and let me go. Her story is wildly different and I had heard that she was blaming Chantix for my behavior. I scoffed at that idea, but for days I was sure she was trying to set me up. But today, I started off-handedly doing some online research on the drug, and a lot of the stories hit home. I am so confused and scared right now. What I wanted to know is, is it possible that the memories of that night are not real at all? My Chantix ran out a month back, and I did not get more. I have been so stressed out and want to smoke. Please help.