You are whole already.  You are complete.  Nothing is lacking in your basic essence as spirit.  Picture a sphere filled with love, filled to overflowing.  That is you.  Relationships merely add a different dimension.  You will appreciate the play on words.

Relationships exist for you to realize your fullness, your essence as love.  They are not necessary for your completion.  They only add to the joy of this awareness or detract from it for the lessons this brings.

Picture each of your relationships like a yin-yang symbol.  There you are with the other, dancing back and forth, seeking balance and harmony.  Where there is imbalance, there is a lesson.  Is one of you giving more than the other?  Is one of you giving less?  Then that relationship is out of balance.  Ask yourself why, and there you can see what the relationship has to teach you.