Cali has spent her entire existence hiding everything she truly is from everyone… including her family. Love isn't something she believes in. She's seen the harm that so-called emotion can cause in her own parents' relationship and wants no part of it.
Star Base Commander Jamis Dexxirs and his Sub Commander Taarig Ynn are well known for their attitudes toward females and their sexual preferences. They are Apre, one of the most powerful, long-living beings in the universe, so why settle for one female when there were so many to choose from.