So, I came in here because I really don't know where else can I tell what happened last night, so... basically I started to talk to an old friend, which whom I don't talk very often, it all started pretty normal, basic conversation, then she told she was having a fight with her "boyfriend" (they're not really on a relationship, they just fuck), so, suddenly, we started to talk about my own sexual life (which has been dead for a long time), then she started to send me pictures of her butt, and that conversation carried on for about an hour. It was a pretty weird experience, I was shaking and nervous, because, here comes my question, did I did wrong?. I did not masturbate, or anything like that, and I erased the photographts as soon as possible, but still, I'm worried, wondering if I screwed with my three weeks (20 days) on this NoFap new life. PS: Sorry for my english.
You didn't mess anything up. You had no control over what she was going to send you. The awesome part is you didn't fail in controlling what you could in order to ensure your own health! You should count this as a victory and a sign of progress! Well done!
I don't know the full situation, but here is my opinion. You can't always control what you see, it is the way you look at it that matters. For example if I was searching for a picture of pineapples and a random picture of porn pops up, as long as I don't look at it purposely and longingly I don't think it counts as a reset.