AITA for spazzing on my girlfriend?

For context, I had an affair before we got together, she’s brought it up on multiple occasions. I wouldn’t have cared if she didn’t make a deal of my mistakes. I did have consent to go on her phone and I initially didn’t “go through it” I was looking for our 1st memories together( we are from 2 different states, met online) upon looking for our photos I found others that bothered me. I was selfish and didn’t consider the importance of good memories. And again where I’m from that word isn’t considered a slur because people don’t use it much here. I understand now how much of a slur it is and I regret using it in my title. Until you or someone else shows me how to change my title I can’t do anything about it.

/r/AmItheAsshole Thread Parent