Well, I would say those who are jealous are not extending pure unconditional love, which would never be jealous. I would add, however, that from my viewpoint most people who are ‘in love’ are only touching the the lowest levels of pure divine love, and many relationships are based as much on satisfying selfish desires as they are about freely extending love.
We seem to be in agreement.
We just need to draw a bright line between what most people call "love" and "unconditional unity".