The Importance of Setting Well-defined Boundaries in a Relationship.
Boundaries are clear lines of demacation .A healthy dating relationship needs good,solid, and well-defined relational boundaries.These boundaries remind you who you are, bring to your mind that you are a separate and distinct person from others - so you don't start doing something because others are doing it.boundaries help you to control your thoughts and feelings.When you set boundaries you are less likely to be messed up in a relationship, because you will know your preferences, what you like and dislike, what you will accept and won't accept, what you can do and can't do.You will know when you are going out of track, and when to apply the breaks...
http://www.socyberty.com/Relationships/The-Importance-of-Setting-Well-Defined-Boundaries-in-a-Relationship.579385
