I have a very simple---yet genuine--question. You say you tell your wife everything; I believe you. But I wonder if you do so in a language she also speaks.
I ask this, because you have a great skill for talking about things, and around things.
The brain of a BS is traumatized. It is so, so different that the mind of the wife or husband pre d-day. It literally functions differently as a result of the trauma.
When I ask, "Does she know?" I don't mean, "Have you discussed your difficulties letting go?" I mean, have you stated your intentions, in clear terms the traumatized (and ----wow--despite it all, ever-so-hopeful) mind can understand? Have you said, "I can't let go of the mementos and good feelings. I know this means our marriage will end. Go ahead and sign that lease; I'll pay for the movers."
I'm not kidding when I say her brain cannot process any but the clearest communication; that your ability to talk around a problem can cause unspeakable damage, at this stage. I know, because that damage was done to me.
Please--be very clear with her. If you've spoken as you've written here, she needs an unvarnished and very simple statement---including acknowledgement that she will be moving out immediately. She needs to know to remove herself from her biggest trigger so she can begin to heal.
I also wonder, because this is something that never occurred to my husband, whether you have considered that your wife will no longer be your friend, and likely will no longer be in your life in any way as a result of your choices.
I'm not being facile or facetious. It would be heartrending to realize, when it's too late, that you've truly exchanged mementos for any sort of relationship at all with your wife. You may expect otherwise. She may expect otherwise in her traumatized state. But that is quite likely to change.
(Edited because I remembered your wife is preparing to move out, rather than you.)
[This message edited by solus sto at 1:21 PM, August 10th (Friday)]