Marriage is about providing a protective environment to raise the next generation. The state has no interest in "love", obviously. The state imposes economic duties on husband and wife in a marriage, protecting the unit and their offspring from economic stress that may arise from the dissolution of the marriage, and protecting the state from having to assume the burden. And marginally, assuring an appropriate genetic separation, and matching for viable procreation.
This homo union thing is the nightmare product of weak minds, addled by drugs, TV, and the moronic "educators" in the schools today.
"love", what a moronic yuck of a "reason" for the state to establish an institution - go indulge in your veggies.