Maybe it can't be that way for some people. For some, there's only one person for them, and that's it for them. And it's alright if that's the case.
For others, that isn't how it works. For some, it isn't a matter of having only a set amount of love to give, and once it's spent, that's all there is forever.
[...] But if you're saying that because I love someone, I can't be with anyone else, then you're it.