Between the Needle and Me

[Achebe]

You said you loved me
but forgot your words in a fifth of gin
And threw it up in the toilet
As you shit all over it again.

You’re a bird that can’t land
And it’s hard for me to see
Lying awake all night thinking
Will you choose the needle or me?

Or will you fly to another bird,
Just as I expect
Why in the world do I love you
So many reasons, and yet;

You tell me to wait 
For when you find your feet
But I don’t see your smile
in the other girls I meet

So lay me down in the meantime
Torture me every other day
As your heroin veins make you smile
A lot more than I may

I like this poem. It's sweet and unpretentious.
If you are going to take it to the next level, you need to look at how what you've done in L3 and L4 can be repeated elsewhere.
L4 is so visceral that I can smell shit for the rest of of the poem, so your feelings of tenderness come across as being fetishistic and not something I can empathise with.
Barring L3 and L4, the rest of the poem deals in abstract generalisations, which is why the smell of shit doesn't go away.
But that's only if you're looking at taking it to the next level. It's a 'nice' poem for Novice.