<human>: Basically what the title says. I don't even go on gonewild specifically, I was on r/all and came across a post that was on my front page. Recognized our bedroom in the background. 
  
We have been dating for 3 years, living together for about 1 year. She has never mentioned posting on gonewild to me. When I saw the picture I went to the account and looked through the other posts… she hasn't posted her face but it's definitely her as I recognize the rooms in the pictures as well as several characteristic features. Seems like she's been posting on and off for a couple of years and is pretty popular. It's actually pretty surprising to me that I haven't come across any of her pictures on the front page before. And no I will not post a link.  
  
Honestly, it made me feel sick to go through and see all the stuff she has posted. All the sexual pictures that she never sent to me. All the flirty responses to creepy sexual comments.
  
We have a great relationship. We have a good sex life and I thought we were open with each other about everything. I guess not.
  
I feel really betrayed, but I'm not sure if that's justified. It's not like she actually cheated on me. I know a lot of people wouldn't consider this a big deal. If she mentioned it to me i'm not even sure if I would have minded. I'm just upset that she was doing it behind my back. Is this cheating? I honestly don't know.
 
I'm not sure what to do now. I haven't confronted her about it yet. I'm not sure how I should handle it. Any advice is appreciated, especially if anyone has been in a similar situation (on either side).

Can you condense the text into a few key points?
<bot>: Found out that my girlfriend regularly posts to gonewild, though she has never mentioned this to me. Not sure how I should feel or what to do.