At Least In This Lifetime

How will I know if you're the one I want to be with always?
Shouldn't it be more obvious?
It's not a small thing

If I don't know if you're the one I want to be with always
Should I hold out for somebody else?
Or is this as good as it will get
At least in this lifetime?

How will I know?

How will I know?

How will I know?