Lyric discussion by jennyj42 

The meaning is in the title, Space and Time. When he says "space and time"he is referring to the distance between him and his past relationship and that although space and time exists, it bears nothing over how he still feels, the love is still alive,

as is he and his ex, they exist but that is all they share in the present moment "we have existence and it's all we share"

the rest is about looking for confirmation that she feels the same, and hope "keep on pushin cause I know it's there"

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