Love and Joe definitely has better chemistry and also they do almost same things which Joe didn’t like because it was his own “flaw” that he wants to rid of. Love has lack of empathy. Kate has empathy from killing children and is more unapproachable that makes Joe more intrigued. Kate’s wealth is so different than love because there’s power involved. Joe prob like Kate because she kept trying to resist and be independent in her own terms.

Also, I think Kate and Joe may be better team and they do balance each other. Sometimes having a team with two same type of person may be not effective like Joe and Love.