You know sleeper, early in my situation before we separated, my stbx once told me.. "I deserve to be with somebody that could love me for me".
I didn't know what she meant by that at the time, but it's classic MLC talk for a wife who's ready to walk and who most likely has OM waiting in the wings.
Yours just seems to show a more poignant variation of that same theme. She may really want you to get laid in order to suppress her own guilt. I now understand why my stbx said what she said, but I didn't realize the meaning behind it at the time because I didn't know about the OM until later on.
Even after all this time on these boards, I'm still amazed at the similarities of everyone's situation. It's really text book stuff and can be an exact science in some respects.
"It is curious that physical courage should be so common in the world and moral courage so rare." -Mark Twain