I think the title is Runaway, it's sung by a female artist playing an acoustic guitar

The lyrics are:

Verse 1
I know I'll hate myself
For not running away with you
But the time we spend together
Wouldn't be any better
That's the problem

Chorus
Why can't we runaway
Why can't we runaway

Verse 2
Do you, do you want to
I do all the time
and I can't think of anything else
By now you know how I feel
Unless you just don't get it

Chorus
Why can't we runaway (x4)

Verse 3
How could I have known
That I'd feel this way
I wanna be, I wanna know
All the things you are

Verse 4
I called your house today
Just to hear your voice
While you were away

Chorus