There are many people who are very stressed out in their relationships. Every day they're going through something with their significant others leading to stress overload, anxiety, etc. Some people find it difficult to cope with the constant chaos. It leads to a mental break. No one should ever allow his or herself to be in a relationship with anyone and feel completely stressed out, afraid, exhausted, etc. It's important people not give their power to others to treat them any kind of way.