*And I'll add this in regards to "Is love a universal truth?" even though it's already been touched on by others.
What we experience as love is unique to our biological make-up. Barring abnormalities in neurology, love can be called a human universal truth. Some sort of interplay with the limbic system and the rest of our brain which I don't fully understand.
If our brains were set up differently, than love might be a totally different thing, or not exist at all.
A hypothetical alien race from across the universe might not have "love" like we do.
*Any answers regarding the universe should probably include that our (my) capacity to understand the universe is limited to only a few puny senses ('sight', 'sound', three dimensions etc.) and some theories, and for the most part, nobody has a clue.