Well, I wasn't as cheerful about it as you seem to be thinking. I said something similar to what I said here too to the effect of in order to maintain my sanity I need to wean myself from being attracted to you.
I didn't think you were cheerful. It just sounded like you weren't clear on the "In order to back off sexually I will have to emotionally detach from you, which may well become permanent (and threaten our marriage)" part.
Were you?
If I were LD and just heard "order to maintain my sanity I need to wean myself from being attracted to you" I'd hear "great! He's gonna stop wanting sex!!" and that's it.
