<human>: Hey everyone. first thanks for reading. 

When I was on my boyfriend's computer going on Reddit , I noticed that he had not logged out of his own account and that there was a lot of porn on the front page (since all of his subscriptions were for porn subreddits). He was out of the house at that time, so curiosity got the best of me and I looked further. He was subscribed to a lot of porn, but I thought no big deal... until I saw some of the comments that he had posted and private messages he has sent. All of his comments were trying to get random girls to have sex with him and perform blow jobs on him. I then looked at the trash of his email, and I also saw that he was doing the same thing on Craigslist. 

The private messages go beyond when we first started dating, and throughout our relationship of two years. The most recent one is from one month ago. 

In a frenzy, I took pictures of his private messages on Reddit so that I could digest what I was seeing in private and I left, texting him that I got sick and needed to go back to my place. 

Please help me out. I don't know what to do at this point. I want to confront him and understand why he felt the need to go to random strangers when we have a very active sex life, and I join in all of the fetishes that he has. I try to be the best girlfriend I can, and we have only had 2 big arguments throughout our two years. I don't know what went wrong. Is this considered cheating? Can a relationship come back from something like this?

Give me a shortened version of the text
<bot>: I logged onto my boyfriend's computer while he was away, and I found that he emails random people for sex/blowjobs on Reddit and Craigslist. Can a relationship survive something like this? Thank you