I agree with NOPkins. I was going to suggest something similar. When thinking about the pros and cons of your decision, try to ask yourself what you fear most about staying in your marriage and what you fear most about leaving your marriage. Perhaps, it would be best to take any action you can to deal with these fears before you make a decision.
Hugs,
MM
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver