Tegan was talking about how she used to have anxiety issues when she would get up in the middle of the night to go to the bathroom. She would walk out to the living room and just freeze, unable to make it to the bathroom or back to the bedroom. She said her girlfriend started walking her to the bathroom at night and it became a regular thing, even after they moved. So I think "When I get up so do you, when you get up I sleep right through," is talking about that.
Tegan was talking about how she used to have anxiety issues when she would get up in the middle of the night to go to the bathroom. She would walk out to the living room and just freeze, unable to make it to the bathroom or back to the bedroom. She said her girlfriend started walking her to the bathroom at night and it became a regular thing, even after they moved. So I think "When I get up so do you, when you get up I sleep right through," is talking about that.