I believe we always have to take science into account, in reference to what our bodies do to us when we experience a deep connection of love with another human being. I can see this being a hopeful truth, however, for me, also being in an extremely connected relationship, I get it. I have never been this in love in my life. I feel accepted as my full self every day and nothing I do can damage that, (aside from unethical behavior, of course). The point I am trying to make is, if it was proved to be a completely real thing... then what? Just keep celebrating that you love someone that much and they love you entirely the same. Take the pressure off of the relationship and just be together in each moment. My first memory as a child has involved feeling anxious up until every second of every day. Being with my fiancé removes a large amount of that, so I get it! Enjoy it! (Fair warning I do not always practice what I preach, however, I do try to encourage myself to do the same and alleviate the worry about these labels)