Well, knowing the goddess of love personally I thought that this would be an easier question to answer. To be the most simple there are those we are born to love and those that we choose to love.
In the beginning we are given our family, so we learn, if we are lucky, unconditional love. Mothers, fathers, sisters brothers - all teaching us how to love. When we grow up we all discover that we have a choice in who we can love, and that is when we picks our partners.
Not all of us are so lucky to find a person who loves us in the same way that our first family did - but I am one of them. In Gabrielle I have found those things - unconditional love - as well as a best friend. With her I know that she will walk beside me for the rest of both of our lives.