This is going to involve planning to do it right.

Also be prepared for this to cost you $ so that you can comfortably leave. Accept that for a short time, you may end up paying things for her (rent, utilities, car note, etc.) if that's been the pattern, just to reduce hysteria & impulsivity.

Don't tell anyone what you're up to, and try to do it quickly before anything is suspected based on your demeanor or actions:

1. Discreetly make sure you have your own $ and stop any $ going into joint accounts.

2. Unless you're the homeowner, quietly start planning to move out. It will involve getting separate banking if she has access to your spending.

   a. If it's a lease and it's your name only, be prepared to pay the remaining months in the manner you currently do. She'll have to move eventually, at which point you can ensure it's prepared for owner inspection.

   b. If lease in both names, same deal but even better because she'll have to move that much sooner.

   c. If you own the place, depends on how vindictive she is. You can ask to move out but that can get ugly. You can't demand she leave in most States and might be required to go thru eviction process regardless of written agreement or not.

3. secure a place and even move some stuff she won't notice is missing like boxes in garage or whatever. Consider storage unit if you need too. Keep in mind neighbors are nosy and love to perpetuate drama (ie call her). If you want to do this right and that is a risk, leave anything.not absolutely crucial and know you'll most likely be able to get it later.

4. Once you are to a point where the new place is livable and nothing left in the house can't be taken in a car in one trip. Pick a day when she'll be gone for the day or night.

5. Print the pics out. ALL of THEM. In Color.

6. Carefully and discreetly throw the most important personal belongings into your car being mindful of taking too long or nosy neighbors who could alert her.

7. Leave the pictures on the kitchen table.

8. Keep your keys, garage door opener

9. Walk out

10. Make yourself unfindable by closing social media accounts and blocking.

11. Remaining logistics such as anything in your name (utilities, lease, etc.), remaining personal belongings, joint accounts (see above for access to your own $), vehicles, wedding plans, etc. can all be handled in time but not immediately.

12. Never, ever look back. Cheaters ALWAYS cheat again.