Yep, you're right about the guilty conscience. The quick jump to be defensive is a sure sign. I'm benefiting from xBF's guilt right now because he's still paying for everything. I know if he hadn't been having an affair he would have wanted to get everything settled much faster.
And amen to getting off the roller coaster! I've never liked them anyway, I have pretty bad motion sickness.
If you love somebody, set them free. http://tinyurl.com/2empx2g