A Heartfelt Stab
For those who have found their spouse cheating on them, the pain can become overwhelming in an instant. They trusted the other person to be faithful in this most important area of their life, and they suddenly find their partner believes they are not worthy of that respect. For those who have dealt with a partner betraying their trust in other ways, a heartfelt stab in the back is often the feeling many of them describe when speaking about the incident.
The possibility of a cheating spouse seems to be prevalent among those willing to speak about bad relationships, but it is often the smallest of stabbings that can break a couple apart. Those who find their spouse taking the side of a friend or family member against them have often found it is the item that takes away their implicit trust in their partner, and it can be the one thing that will destroy their relationship.