There are many different levels how we can perceive and experience love.
On the level of ethics or principles you will be able to differentiate the different levels with their options and challenges. This level enables you to distance yourself from yourself.
In practice this means, that you can observe, like a neutral observer how you have handled the options and challenges of love on the different levels of development, and what kind of thought forms and behaviour may even today hinder you to give and receive true love. As you are not completely identified with your own thoughts and responses anymore, you can choose how you may best overcome the obstacles.
If your partner for instance would like more room for himself, you will not simply react with fears of loss and trying to hold the partner, but you observe the responses in you and you use your competence to develop another way of dealing with such situations.
With the consciousness of the fifth level, you attain the freedom to direct your thoughts and behaviour in such a way that it leads to your chosen goals.
If you integrate all that you have learned on all the levels, you become an embodiment of true love that spreads to all people. This feeling of universal love is the all-encompassing feeling of compassion that Buddha spoke about. It is the wish to ease the suffering of people helping them to understand the transitory nature of this world
Each level has its own qualities and challenges, and it will take a different length of time to come to terms with them.