Meir Ezra --- Nothing can ruin a relationship or marriage faster than jealously. Jealousy creates anxiety, anger, loneliness, hate, fear. No one thinks clearly when jealous.
Having a relationship with a jealous person is tough. The jealous person acts untrusting or unworthy. Jealousy makes the person unattractive, even repulsive.
No one wants a jealous mate and no one likes being jealous. So what causes jealousy?
"Jealousy is the largest factor in breaking up marriages. Jealousy comes about because of the insecurity of the jealous person and the jealousy may or may not have foundation. This person is afraid of hidden communication lines and will do anything to try to uncover them." — L. Ron Hubbard