Temporary?

What lasts forever?
Words?
Strength?
Emotions?
Memories?
Nothing does.
Not to me at least.
Everything has an expiry date that we can't see stamped upon it.
Because it's invisible,
Because i forget it's there,
I have to keep my guards up and expectations low.
Even so,
I get swept off my feet oh so easily
Careful Jane,
Nothing lasts forever.