[Verse 1]
Your footsteps on the stairs
If I listen hard enough, they're still there
You think I'd know better by now
[Pre-Chorus]
But I still drink until you're next to me again, baby
Yea, yea, yea
And I still think that in the morning I might wake up next to you
[Chorus]
Empty bed and empty space
It's in my head, your smell, your taste
Your memory is all that's left
To fill this empty, fill this empty bed
[Drop]
This empty bed
Fill this empty
[Verse 2]
And your pictures on my phone
Help me to pretend that I'm not alone
You think I'd know better by now
[Pre-Chorus]
But I still drink until you're next to me again, baby
Yea, yea, yea
And I still think that in the morning I might wake up next to you
[Chorus]
Empty bed and empty space
It's in my head, your smell, your taste
Your memory is all that's left
To fill this empty, fill this empty bed
[Drop]
This empty bed
[Bridge]
But I still drink until you're next to me again, baby
And I still think that in the morning I might wake up next to you
[Chorus]
Empty bed and empty space
It's in my head, your smell, your taste
Your memory is all that's left
To fill this empty, fill this empty bed
[Drop]
This empty bed
Fill this empty bed
This empty
Fill this empty bed
This empty
Fill this empty
He still subconsciously expects his lover to be there whenever he wakes up because he’s still somewhat accustomed to it and/or he still misses them.
He is stating that he should probably be over his relationship by now, be it either because a long time has passed, the breakup was rough, or both.
The singer misses her partner so much, that she resorts to drinking as a coping mechanism. This line states that she drinks until she’s next to them again, which is a metaphor stating that she drinks so much that she starts allucinating that they are still together.