The usual way that he would initiate teh R talk is not through actually saying he wants to talk about it but through his behaviour - showing that he is angry, annoyed etc and by that having me ask him what's wrong. After that the talk would start.
When it comes to sex (and BTW got some last night as well ) I think it's his way of dealing with emotional pain that comes with the R talk (still and always). It's his need to be loved and re-assured and I think he feels that I need it too. Personally I love ML (not that he views it this way) to my still H and because I really don't put any hope into those actions as to reconcilliation - I'm able to enjoy it and not feel guilty/heartbroken etc as I used to.
I feel that I caused him enough hurt by denying him the physical contact before and if this is one of the ways I can show him that I do desire him and it's nothing that he did that was turning me off - I'm planning on doing it until we are no longer M or no longer under the same roof.
Another thought - if he is still looking for that "spark" and the more LMing we have the more he might be able to feel the connection - by all means! I rather have him realize that when we are still M then wait until D (or never).