It is important to heal your relationship with your partner, husband, wife, Ex, or lover to heal your heart chakra. Several times our met or unmet expectations become causative factors for the hurt and we either wall up or retaliate or disturb the relationship. What you need to realize is that your partner is fulfilling your need for certain experiences. They are somewhere mirroring your needs, incompletions, aspirations, and personality traits at the subconscious level. They are reflecting your opposite principle. As you love,  accept, and embrace them you are loving accepting and embracing a part of your personality. This is how you heal and activate a part of your major energy center, your heart chakra.