I do wonder about that too... I had a thought the other day along the lines of "so will we just fizzle out and stop talking and finally one of us will say 'well, I guess we should officially end this?' " We don't live together anymore and have no kids, but we do still have some shared assets so that has facilitated some logistical communication. More and more of that is getting sorted out so communication is less. When I had a little anxiety attack one day about whether or not I should have said something to H about how me moving doesn't mean I was done, that I'd still be open to getting back together, lots of people said similar things: -If he wanted to R with you he knows how to find you -If he's too stubborn or prideful to reach out do you really want an R with someone like that anyway? -and as Maybell nicely put it, "Do you want a marriage where you have to constantly remind your partner that you're around and want to make him happy? Or would you prefer to be chased just enough to know you are valued?" Those things helped me feel better about being a little more distant on the communication from my end. And, I was also reminded to be pleasant and light. What that has meant for me is if H sends me something that doesn't really require a response (like a few weeks ago when he sent me pictures of some patio chairs and said "thought you might like the color of these") and I feel like a response might be helpful because it's been awhile or it seems like he's looking for an acknowledgement, I'll respond briefly but politely in a way that doesn't continue a conversation (like "Neat!" regarding the chairs).
Me:30 H:29, no kids T:12, M:4 (when D was final) 12/13: "Don't think I want to be M anymore" 6/14: Separated (I move) 1/15: H filed for D 5/15: D final