This isn't really how it works though. She would take AT LEAST half of what you currently have, including stuff you had before you met. You would also have some responsibility for providing for her and your children in the future at a similar standard of living to her current one. You would have pension liability and could lose part of your business if you have one. This could likely be the case even if she was unfaithful. Not meaning to preach, just some things that I found out after the fact, that I never thought about when "young and in love".