Write the letter...I agree with that...get it out. Then burn it...or better yet, put it in a password protect journal on your computer. I have one and it is quite amazing to see now how my tone changed over time.
What is done, is done. So you separated cell accounts...nothing wrong with that. I had separate accounts before, during, and even now. No biggie.
Opened your checking account also I suppose. We have discussed this. I like the idea for any marriage...so again, no biggie.
Now if you wrote a deposit for leasing an apartment....we might have to talk about that one.
24-48...remember it. When things are going fast, that is usually bad for the LBS.
Take a breathe and step back into the new you....if you give him a second to breathe you might like it.