Not Emotionally

Have you moved on?
Am I not in your heart?
I know not how to answer them
Because I don't even know if I am single

I'll never abandon you
Not emotionally anyway
I should be by your side
I should be stronger than this

Who am I?
It gets more unclear each day
I'm a liar
A heartbreaker

I don't deserve you
You deserve better
But never will I leave you
Even if you leave me