Did Sleeping Photo Boyfriend Cross The Line?

Group Therapy Thursday: I took a photo of my girlfriend wearing only panties while she was cheating. We had already been sending pictures of each other while we were nude and I told her about the sleeping photo when she woke up. Did I cross the line? 

We got a message on Facebook for Group Therapy Thursday and here is the full message:

I met this girl and we started dating. Things got serious really fast. We talked about moving in together, marriage and having kids. The whole 9 yards.  We became intimate sending each other provocative pictures, etc. One day I took pictures of her in her panties while she was sleeping. When she woke up I told her (I wasn't going to hide it from her) and it seemed like she was okay with it. Now she tells me she can't be with me because she felt uncomfortable that I took pictures of her. Did I cross the line?

Comment with what you think.