The Lovers (two starting characters! omfg!)
Yesssssss!
I think you can get a lot of mileage out of the "follow up on someone else's move" with this. Maybe that would slow things down, because that's two rolls per player, but still. Or maybe you can handle them as one character, totally inseparable?
Hmmm, the more I think about it, the more their moves should be roll-less. Give them only the basic roll moves and the rest are just bonuses and stuff.
Here are a few quick ones:
Twin ears and eyes if The Lovers are in close proximity, whenever one of them reads a person or a charged situation, she gets +1 forward to the roll.
Until death do us part... can't be
Separated.
Synergy... when you fight side by side, you count as a small gang instead of a couple of people.
Like lovers do... As long as they can see each other, The Lovers get all the benefits of intimacy and can understand each other as if they had time to speak.
Also, the "when you have some time an intimacy with each other" could be a good clause for their moves.
Or, oh, make the Relationship itself a thing, like a Driver's car and then they give them an equivalent of the No Shit Driver move, like: when
you're together... ...if you're acting under fire add your Relationship's Trust to your roll...
...if you're going aggro, add your Relationship's Passion to your roll...
etc.