Pain...when my W moved out we sat down and went over our family expenses and lined out who was going to pay for what. I make more than double what my W makes so I have obviously assumed more of the financial responsibility.
She pays for her rent, living expenses, spending money and cell bill out of her monthly budget. She also pays for a portion of our children's afterschool care as well.
I was willing to do this because I knew I would be on the hook for spousal maintenance and child support due to what I make and also because if we split everything 50/50 she would not be able to make it on her own. I was trying to be realistic about it knowing as well she wanted to move out. I did not want to hold money over her head and that be a controlling factor in her reason to stay.
My thoughts was if you want out, lets sit down and discuss finances and how we can make this happen. I hope this makes sense.