Here are some of the "Our Marriage was Already Over" type of excuses.
- Our marriage was over long before I cheated.
- We're not like we used to be.
- I don't love you anymore.
- We've never been right for each other.
- I feel trapped.
- I never wanted to get married.
- I don't want to live like this.
- I love you like a sister/brother.
- I wanted to shake up our marriage and make it better.
- You deserve better.
- I thought you didn't love me anymore.
- You left me before I left you.
- I was never in love with you.
- Our marriage was boring.