vickyd- I can tell you that I do this same thing with my H. For some it works and others maybe not.
I know that it irritates my H to some degree but at the same time I know it makes him think because he is CONSTANTLY asking me what me and "OM" have planned from day to day especially when H takes D7.
He makes comments about me finding "love" with this OM in a way that I KNOW it bothers him.
However, I only give H bits and pieces of what goes on. I do make it known that I am not having sex with OM. Now I don't just come out and tell him that for no reason but I wait until he brings it up in a round about way and I tell him that I am not being anyones booty call therefore sex will not happen until I know there MIGHT be a future with such person.
But this works for me. Only you know your H best. I think some would see it as coming down to our S's level but I see it as making H see that he may actually lose me to someone else and that I am not going to wait around forever for him to come to his senses. Yes it could come back and bit me in the behind but right now that is a chance I am willing to take as I can't find anything else that gets his attention as much as this.
I hope this helps you at least a little. Keep hanging in there:)