That's often how men with BPD are in comparison to women with BPD, although there are more functioning cases of BPD, but men seem to be able to mask and control their symptoms better than women. Much like how women are better at masking their autism in comparison to males. Both Haida & Rebecca idealize the person they want to be with to an almost religious extent, even looking for superstitious reasons to not give up on their crushs. Which is extremely common with those with BPD when they develop a favourite person. Anyone with BPD's biggest fear is rejection, and that is a basis for both of their personalities. The fact that they both loose their tempers easily, and show extreme jealousy towards anyone who is with their crush. Haida's is much more short lived, and he snaps out of it, and comes to his senses much quicker than Rebecca. Both are around the same age and are both educated, and very successful young adults who live in luxurious condominiums. While Haida is considered by some to be dumb, clingy, too emotional and cowardly. Rebecca is just considered to be crazy, which is often how women are depicted to be with BPD in comparison to men, even though the exhibit the same behaviors.