In Merrick's lab Booker said Joe and Nicky always had each other. But that's not true.
They just never told him about the time Nicky was kidnapped by slavers and it took Joe eleven years to find him again.
They just never told him about the huge fight they had and Nicky went back to Italy to become Leonardo daVinci's muse and Joe went to find a war to slay people.
They just never told him about the time where Joe was arrested and sent to the new penal colony in Australia and it took Nicky years to find out where he was.
They just never told him... (insert reason of choice)
They never told him about all the pain they went through in all their time together... but now that he asked for it, they give him everything.
Joe/Nicky & Booker - "You always had each other"... but they hadn't!
They just never told him about the time Nicky was kidnapped by slavers and it took Joe eleven years to find him again.
They just never told him about the huge fight they had and Nicky went back to Italy to become Leonardo daVinci's muse and Joe went to find a war to slay people.
They just never told him about the time where Joe was arrested and sent to the new penal colony in Australia and it took Nicky years to find out where he was.
They just never told him... (insert reason of choice)
They never told him about all the pain they went through in all their time together... but now that he asked for it, they give him everything.