This is one of the most consistent things a cheating spouse will say.
Your spouse may have a deep, loving bond with you but, intense feelings of passion can override the bond with you and cause your spouse to lose sight of his/her true feelings.
You have a sinking feeling in the pit of your stomach, something is not right but you can't quite figure out what that feeling is about.
Your spouse has become distant, he/she is working late on a regular basis or, maybe your spouse has moved out of the house with no explanation.
This is what happens in many relationships that fall victim to infidelity.