Unexpectedly, after reading this many times, I can concludes that they're actually perfect with each other (FL & ML), like they are the ones that are really suited for one another, they matched each other's freak. They both knew the other better than themselves.
I agreed with one of their aides who stated that those two are almost the same, like husband, like wife. They both have different but the same toxic traits and passion and deep love for each other. For some, they're messy together, but them being separated is much greatly messed up. They balanced each other. Therefore, them being together is a must; it's necessary for everything to work out. They complete each other, FOR REAL.