If You Want To End Your Marriage. . .There are goods and bad ways to end a marriage. There is also a worst way. That is cheating on your spouse.
It may make you feel good for now, but it will destroy them. And you will not feel good then.
Stop and think about your options. Do not EVER make your physical or emotional needs the most important thing in your life. There are consequences for all actions. You do not want this one on your conscience.
Take it from a man who has had the light in his soul snuffed out.