Vampyre have long worked to overcome any personal limitations caused by the emotion of jealousy. Not only is it considered a human failing, but it prevents vampyre from thriving as individuals and as a race.
It is interesting to me that vampyre males would be intimidated by vampyre females. Some of this is likely the result of Greek and Middle Eastern conditioning in antiquity, as well as a natural lack of female vampyres.
I’d postulate that the misalignment of a vampyre male to a human or hybrid-female (or vice versa) results in the lack of intellectual and creative union required to develop and produce true innovation in whichever field they have individually or collectively chosen.
A genuine alignment then would result in a power couple-two synched individuals achieving inter-and intra-personal alchemy within their romantic, personal, creative and professional relationship with one another.