The Major Arcana
The Wife – “Jeannie” We actually don’t know if this lovely lady even existed. It’s possible Joker simply imagined her or made her up. He’s fond of altering his past. (We’ll ignore Leiberman’s contribution in Hush Returns which ‘confirmed’ her existence. Joker works best as a character with a mysterious past and I think it’s been retconned anyway.) At any rate, Jeannie – pregnant and wife to our mysterious J, supposedly killed in a freak accident – does reveal an interesting alternative aspect to Mistah J, one not seen much, if at all. Whenever he recollects her, which isn’t often, it is with pain. He feels bitterness about her loss. If Jeannie was ever real, or if she is only a creation of his crazed imagination, she stands as a symbolic remnant of his long-lost humanity. Perhaps she even betrays some much-smothered desire for what once used to be…
The Fiancee -  Rebecca Brown When Joker went “sane” he was as different as could be to the sociopath we know and adore. He became a quiet, gentle, mild man, working as an accountant,  with a love of old movies and classic music. And he met the girl of his dreams – an equally old-fashioned, gentle and lovely girl named Rebecca. The two fell madly, absolutely, passionately in love. It was just like in the movies. Of course, when Joker found out Batman was actually not dead, he killed Joseph Kerr and came back with a vengeance, immediately forgetting his sweetheart and heading back to the love of his life. But… abducting a female politican he intended to kill, Joker unexpectedly sees Rebecca’s face. And without knowing why, lets Councilwoman Kenner go. As with Jeannie, Rebecca represents something Joker has long since buried – but which perhaps beats still, however faintly.
The Girlfriend – Harleen Quinzel, “Harley Quinn” Of all of Joker’s paramours, Harley is the one to have had the most profound impact on him  -as Joker. Harley fell in love with Joker; not mild-mannered Joseph Kerr or a struggling, nameless comedian. Harley believes she sees something in Joker – perhaps it is the last little glimmer left embodied by Jeannie and Rebecca – and adores him for it, as well as for everything else that makes up our J. Though Joker is incapable of the kind of human emotion felt by Joseph Kerr or Nameless Comedian, it seems that the longer Harley exists in his life, the more something resembling love and affection is awakened. Certainly his treatment and tolerance of her over the years, whilst still abusive and built around his power over her, has become softer and more fond. Harley is unique amongst everyone for being the person who has gotten closest to him for the longest amount of time – and yet still breathes. In fact, Joker has openly admitted to trying to kill her – because he cares about her. It is not exaggerating to say Harley is the most significant romantic relationship Joker has ever had (although his obsession with Batman is definitely a kind of romance) or indeed, the most significant relationship, full stop – because she has penetrated the monstrous exterior of JOKER.
The Lesser Secrets
The Affair - Cassandra Hahn Cassandra Hahn first encountered Joker when she and her station – GothTV – held Joker in confinement and aired a series of reality programs with him as the star. Mistah J played along of course, loving the attention he was getting – and relishing the absolute power he had as the media buffoons fell over themselves for their ratings. Cassandra is drawn to Joker, to his mystery and his danger, as well as the ratings goldmine he offers, and seeing an opportunity Joker wastes no time in seducing her. However, Joker feels no attraction to her  - instead he’s getting off on the power he holds, the ability he has to make her do whatever he wants for him – she is nothing more than a pawn to him, and a way of passing time and manipulating events to suit him. Likewise, Cassandra ultimately had no feelings for Joker, beyond being drawn to his power – she is using him as much as he is her. Of course, she doesn’t really understand J – which is driven home by the end of the series when he surprises her and changes her life in a way she didn’t really anticipate – or want!
The Lover – Terry Ammons This little lady believed she could change Mistah J with her love. An Assistant D.A in Gotham, she falls madly in love with Joker and swears herself to making him hers and helping him to achieve his goals – whatever they may be. She’s obsessed, and she thinks she can change him, rescue him, deliver him. So she’s awful easy for Mistah J to manipulate. Her infatuation is similar to Harley – but she isn’t a match for her. Her life disintegrates quickly around her ears during her involvement with J, and she is soon doing things she could never have dreamed of – and she’s doing them out of fear of losing J. But her heart’s not really in it. To Joker she is clearly just an object to use and manipulate – she herself says there is no sort of physical intimacy between them and he knows the mere threat of his leaving gets her to comply with whatever he demands. Much like Harley, he creates her, but she’s more like a sketch, a first draft, rather than the grand masterpiece that Harley is. She does not succeed in getting under his skin as Harley does.
The Groupie – Jewelee Joker, along with most other villains, has been dumped on an alien planet and left to rot. He wastes no time in establishing himself as leader of one camp when the group splits into two. Jewelee, formerly the devoted wife of Punch, seems drawn to Joker’s power and magnetic charm and is frequently seen hanging off his arm, or close by his side. Interestingly enough, Joker has not once acknowledged her – not with a word, a look, or even with body language. Even when she has her arm looped through his he seems oblivious to her presence. It remains to be seen exactly what the nature of their ‘relationship’ is – if he’s actively playing her, or if she’s just decided to latch onto him and he’s tolerating it.