You know the sex thing I've come to believe just doesn't quite fit in the neat little DB package as some other topics. I truly think it has to be up to you. What emotionally you are able to take, if you feel good after it. If you feel used in anyway, or if he feels badly afterward, you might want to rethink it.
For my sitch, it was a 180 for me TO pursue him in that area, and I honestly think that my doing that helped keep that physical connection when everything else was lacking. And JUST recently after 3.5 months am I just now starting to see the slightest emotional connection starting to reappear. I'm convinced that if I had cut all that off, we might not be where we are now. Which mind you, we still have a LOOOOOOOOOOOOOOONG way to go, but for me it was a good think to keep the physical relations up. And since you don't have an OW, (I didn't either) I don't think you really have anything to lose.
It did (does) hurt to know that it's just physical for him right now, but I also know that for my H, showing love through physical intimacy is his "love language" so I hope for it to eventually inspire the emotion to come out again.
Do what you feel in your heart.
Chris
__________ Me:39 H:39 D:8 D:4 M:9 (T 13) Bomb 4-5-08, H moved out 6-16-08, Reconciled and H moved back in 5-31-09 Still doing GREAT a year later!!!