A chick I was briefly seeing recently accused me of gaslighting her because she got pissed at me when I tried to explain my side of the story. Long story short, we were hooking up casually on the down low and one of the conditions we had was that we give each other the heads up before we start seeing other people. Then she openly flirts with other guys in front of me so I assumed it was a greenlight for me to go for another woman I was interested in. She was furious at me at me because I broke our condition, but when I tried to explain my perspective while also expressing that I can understand why she's upset, and in hindsight we both should've communicated better, she said I was trying to gaslight her....at the same time, a lot of people have absolutely terrible memories and these can also be heavily influenced by their emotions.
Gaslighting is a conscious act to make you question your sanity. Based on what you have said previously, the former seems like the most likely explanation rather than gaslighting.
To her, I was the asshole and she did nothing wrong, while I was trying to say we both made mistakes. But apparently saying that makes me the gaslighter.
It seems now people use the term to excuse themselves from accountability.