All other metaphysical systems tell you that jealousy is bad. Most also tell you that sex is bad, an obstruction to salvation, paradise, or Nirvana.
They are all wrong, and Kreutz Metaphysics is right—at least regarding sex, and regarding jealousy as well.
Jealousy is an enormous sexual reservoir. It is just that so few people can properly wield jealousy as a tool. Being able to deal with and benefit from jealousy is part of the doctrine of Kreutz Metaphysics.
There are two distinct functions of jealousy. We cultivate jealousy within ourselves in order to enhance sexual excitement, an endeavor not just for lust but of a metaphysical dimension, as it builds our eternal soul.
And we use it on others in order to instill jealous love in their hearts. Jealous love is the most intense love, the only love that is real passion.
And the tools? For both applications of jealousy, the most appropriate tools are verbal.
To instill jealous love, we talk about our sexual past, our sexual desires, and how good they were and are. This remains below the threshold at which a sexual partner would feel cheated because, after all, we are not currently involved with somebody else. But jealousy will creep in all the same, and it will evolve into passionate love.
And how do we enhance our own sexual potential? It is the same technique in reverse. Instead of doing the talking, we just listen. We let our partner reveal their past or their most secret fantasies. Then we wait a few days. Our thoughts will dwell on what we heard in endless loops. And usually, even though we know that it is trickery, jealousy will result.