Your composite does have a lot of happy sextiles and trines. Sun conjunct Venus shows that the relationship is characterized by love and affection.
However, as ElenaJ pointed out, a Star of David configuration also, by its nature, contains 3 oppositions, so these are areas to work on. With Uranus-Neptune opposing the sun, you may find that there are too many outside forces at work that make it difficult for the relationship to persist. Moon-Pluto can indicate some obsession, or perhaps that the relationship has a difficult interpersonal power dynamic at work.
Hopefully all of the positive aspects will manifest, however.
The Star of David (involving actual planets at all of its points) is pretty rare. I cannot say whether twin flames or karma are involved. But I don't think you two will ever tire of one another. All those sextiles indicate a lot of excitement.