A few years ago I posted a piece with several tanka poem takes on love. This one is particularly on point:

Unconditional

love twixt humans forever?

Perhaps, perhaps not.

Love is a state of being.

Beings constantly in flux.

I explained it thusly: "Diana’s prompt for today happens to be an oxymoronic “what are the conditions of unconditional love?” I suspect many have much to say on that topic. I have thought about people’s feelings on the subject and here is food for thought for you — love is a state of being — many feel one cannot fall out of true love — here’s the fallacy in that — many correctly believe that we are constantly changing — so, since love is a state of being, it is inconsistent to insist that one cannot fall out of true love. That one falls out of love does not mean the love was never true. That all describes my thoughts about love between humans."

If you want to read the other poems, which includes one equating some marriages with prostitution, here's the link: https://medium.com/know-thyself-heal-thyself/unconditional-love-3481bffe22f4