One other thing CO1978....this is from a post that sandi2 posted in my thread a while back. Considering your situation and what your wife said about knowing where to go if she needed sex, i thought it might be relevant...
"There is coming a time (and may be very soon) that she's going to show up at your door and she's going to give you the sex test. She'll manage to fall into your arms, probably crying, and then one thing leads to another. I want you to remember what I'm going to tell you. She's going to lead you into having sex with her, and then she'll be gone. Do not fall for it! This happens all the time, and it's nothing more than her seeing if she can still make you crumble by having sex. Then, the challenge will be over and she's lost interest once again."