Zues, this is a very important step you are taking and you know you have to do it. It is an important step for both of you to be able to get your selves together. Hopefully she will be able to see it as you being wise and strong rather than getting upset and acting out.
I think you made an excellent decision to no longer live in this weird limbo. Not that your relationship situation has to change that much, but your living situation has been horrible and that is not good for your mental, emotional or physical state. It will be nice to have a place of your own and for your W to take responsibility for herself.
Kudos to you for taking this brave step. I hope you feel better about it soon.
