They are constantly fighting with the person or feel like that person is making them change as a person.
Because we like to enjoy short periods of joy instead of suffering first. Our mind likes to tell us we should procrastinate even though we'll regret it later
Unlike fixed joints or cartilaginous joints, where bones are connected by either connective tissue or cartilage, the bones in synovial joins are not. Which makes them more flexible.
Physical abuse would be the answer because domestic is against your partner in a relationship.