A relationship type of 'love' differs from the 'loves' I mentioned above. A love a parent should have for their children is a different type of 'love' also.
The 'balancing act' in a relationship type of 'love that involves a partner in Life, involves both giving as receiving of course. If a partner does nothing more than take, take, take (receives)..that to me is unhealthy. In fact it can be looked at as usary or even abusing the other person in the relationship. However, if one still chooses to keep on giving and receives very little or nothing in return, then that person is just being played as a fool or IS a fool.
So, it involves a fairly equal amount of give & receive.
Very important also is that when the relationship is in the beginning, each should make it very clear just exactly what the likes & dislikes are. Too many times when people first meet, they put up a good image of themselves just so the other person will think positive of him or her. Everybody wants to be liked or doesn't like to be rejected. This is what I call the 'representative self'. Its not really the true person but the image of what they want the other person to see. After a time thought the 'image self' (the representative self) fades away over time. This can lead the other to think, "Hey. Who IS this person?!".
Honest, direct communication is so so important. And added to that is to Know Your Self. Know who you are, what you are, your likes, your dislikes, your expectations, as well as your motivations in this Life.