As a married man and father I take my vows serious and I would never use that as an excuse to leave my family. I realize that over time people will change physically, spiritually and emotionally.
Check out relationship author (Pursuit of Passion: Discovering True Intimacy in Your Marriage) Julie Sibert’s advice.
This was the call of the morning on the subject.
If you are married and find yourself unattracted to your spouse take time to look and listen to this song by MusiqSoulChild.