Only you know what is right for you, but here are some things to think about. The thing about your sitch is that your H has moved out and he is doing his thing away from your home. That will make it easier to detach. I was living with my H and the A was happening in my home. When I confronted H he refused to move out or stop A, so that and a few other things is why I filed.
In your case you have some space and you do not have children, so I am not sure you necessarily need to rush through D. You can use the time to work on yourself. If the OW has just moved in with your H, things are about to get more real and the fantasy phase might start to wear off. Why not give that some time to happen while you focus on you? You will be in a much clearer space after a few months and more ready to survive D in a healthier space. In the meantime, maybe things head south with H and OW. Either way you are using the gift of time and moving forward with your life. You don't need D to do that. Part of me wishes I did not file quite yet., but I can always find way to delay. I would look into protecting your finances if that has not happened.
Just my two cents!n
Me: 42 H: 40 M: 12 H moved out - 8/2015 I filed - 8/2015
