<human>: Can you condense the text into a few key points?

I don't know how to explain this without taking forever, but I'll try...

I've recently developed a slight interest in looking at/watching guys touch themselves within my porn regimen. That escalated slightly to finding a guy to chat with anonymously, and send each other a picture or two. This is completely fantasy for me at this point, and fantasy is a strong word. I have zero desire to act upon anything in real life, and view myself as straight. I am not attracted to any guys, and only when looking at porn do I sometimes cross over into the "jo-bud" realm (/r/jobuds here). My "enjoyment", if you will, only goes as far as touching. Anything more than that doesn't interest me, and it is a very clear line. It is also a very clear line of reality and fantasy. I am extremely happy/satisfied with my marriage and wife. 

I've always had a relationship with porn, and this is the newest manifestation of that. My wife was a virgin before we got married, and isn't tuned in to any real world of sexuality. We have great sex, and I am very satisfied, as I said. And while I wasn't too experienced before her, I knew of porn and had a more deeply-rooted association with sex.

My wife found one of the pictures I sent a guy today. She is devastated.

Long story short, she doesn't know if our marriage can go on, she feels crushed. She told me she can't think of ever touching me again, sleeping next to me, let alone sleeping *with* me. Through a lengthy, mostly rational discussion, we decided I need to work things out fully (possibly with the help of a therapist, just to get a third non-invested party involved) before we can work on ourselves and move forward.

I am terrified. I never ever wanted to infringe upon our marriage (I realize how I have done that, though), and don't want anything to change with us. I am just hoping there is someone out there who has been through something similar, or can offer some helpful advice.
<bot>: Wife found picture I sent guy. I don't associate as gay, or even bi (online "fantasy" only). She is questioning entire marriage. I'm scared.