You have a reason
You're insecure
You feel inadequate in other areas of your life
jealousy
Possibly , jealousy can cause people to do many crazy or unnecessary things
Jealousy
Love, hate, jealousy, etc...
Common emotions that can lead to irrationality include fear, anger, stress, and anxiety. These emotions can cloud judgment, impair decision-making, and lead to impulsive or overly emotional responses that may not be based in logic or reason.
1)Power struggles 2)personal loyalties 3)property disputes 4) conflicting attitudes and values 5)jealousy and envy 6)lock of respect
that would depend on the person, and what is the person jealous of to start with, jealousy causes nothing but grief and tragedy, so it is better to come to grips with the situation and move on.
It is probably domestic behavior. Fighting over their space, territorial, or jealousy.
I think you will get more easily jealous if you don't trust youre partner.
Jealousy can be caused by feelings of insecurity, fear of losing someone or something important, low self-esteem, past experiences of betrayal or abandonment, or unrealistic expectations in relationships. It often stems from a lack of trust and can be exacerbated by comparing oneself to others.
Drug/Alcohol Abuse, Depression, Anger/hate, Family problems, jealousy...
Usually insecurity, depression, feeling inadequate, jealousy and other negative feelings can bring on mood swings.