Which Are You?

When I look at you,
I can see two different people,
You could be either one,
But you cannot be both.
You could be the one I want,
Or you could be the one I need.

If you're the one I want,
You're not the one I love,
If you're the one I want,
I don't really care about you,
And if you're the one I want,
You're the one I can have.

If you're the one I need, though,
You are the one I love,
If you're the one I need,
You are the one I care about,
But if you're the one I need,
You're the one I can't have.

Which are you?

Peace,
Justin