BF feels guilt, that's it. Don't read anything else into it! They never wanted it to "turn out this way"...they never wanted to get caught screwing around, it just happened. You'll hear all sorts of bizarre crap, try not to over analyze any of it. My W told me once, while in tears, that she was so confused and didn't know what to do and please don't push her right now. I thought that meant she was seriously thinking about what she had done and was about to do to our family. When I brought it up with her a couple of months later she said "I was never confused, sorry if you thought I was"... uh, OK. Remember, words mean nothing, actions mean everything. Hang in there, the sun will shine again.
Remember, words mean nothing, actions mean everything. Hang in there, the sun will shine again. 
