Hi, Relationship is about sharing. Sharing means giving and taking. We have to learn to give to ourself before we can give others. If we give someone "everything", what is left within ourself? We cannot be fair to others if we are unfair to ourself. Every relationship in nature for it to survive must have the element of "SHARING". Look at our ecological system, there must be balance for living things to "grow and thrive". Also its very important to understand about the value of "Symbiosis", look at nature, we can see what living organism can live well together with another living organism for both to benefit from each other, then only can balance be reached.
The lessons to be learned is that before we even want to share a relationship with someone, it is wise for us to first be objective and see whether this person is suitable for us [one mans meat is another mans poison] and that we can co exist in an environment of mutual "giving" otherwise the relationship will definately fail and surely either one or both will end up as "victims".
Take care, Bless be.