How can i remember to forget

So I guess it's over, there's nothing left to say
Take the ring off my finger and just call it a day
Thought we had forever, but that was yesterday
You're such a liar, wish I saw it on your face

But you did it so well,
Can somebody just tell me how?

How can I remember to forget?
When my heart just won't let me
Make myself un-love you, tell me that it's not true
I know all the reasons, but I just can't believe them
and pretend we never met
How can I remember to forget?

Wish that I could hate you, so I couldlet you go. 
Wish I never met, the one I want the most
I could fill an ocean, with all the tears I've cried
Tell me you were joking, just a dream I had last night

But I'm wide awake and,
I want you so much right now

How can I remember to forget
these emotions and all the plans we made?
Like we never happened, make my heart a break.
I know we're clearly over but I just don't know how

How can I remember to forget?
When my heart just won't let me.
Make myself un-love you, tell me that it's not true.
I know all the reasons but I just can't believe them.
And pretend we never met.
How can I remember to forget?
Forget.
Oh