The manipulative person uses these labels, etc. to get control and get their way more than because they just are trying to help the person. Or, they may take the role of a parent constantly with a person who doesn't need parenting. The disadvantages of being aggressive are that it typically increases other's feelings of fear, resentment, distance, and distrust of us. Others often feel a lowered self-esteem due to being dominated. Most lack intimacy skills.
Rejection increases their own feelings of loneliness and inadequacy in the area of intimacy .
In the long run they loose interest and respect for me and end up rejecting me after all. The positive and negative outcomes of non-assertiveness. He may be used to making planning, making decisions, and being able to use assertive or manipulative communication to get what he wants. He is used to focusing on his goals and overcoming the objections of others. He may feel very confident that he can take good care of himself and of someone else too.