I also think it's about something like a one-night thing.
"It's like living in the middle of the ocean
With no future, no past"
it describes those moments you spend with someone without worrying about the future or the past even if you don't know if you can trust the other person. When you're not supposed to do something specific or be in some kind of way, but you just let go. Those moments you spend before you get that while you're living those days, there is a countdown or that numbers have started from zero and now you're at ten for example.
I also think it's about something like a one-night thing. "It's like living in the middle of the ocean With no future, no past" it describes those moments you spend with someone without worrying about the future or the past even if you don't know if you can trust the other person. When you're not supposed to do something specific or be in some kind of way, but you just let go. Those moments you spend before you get that while you're living those days, there is a countdown or that numbers have started from zero and now you're at ten for example.