A gumtree and a koala

Oh, koala!
My gum leaves are perfect for you.
They are as sweet as honey.
Delicious, nutritious, yummy, sweet
Oh koala, you will always be allowed to stay with me.

Oh, koala! 
Thank you for eating my old leaves.
When they are gone I feel ever so clean.
Fresh, new, young, crisp
Oh koala, what would I do without you.

Oh, koala!
I love having company.
Our bond will last a trillion years.
Happy, cute, friendly, fluffy
Oh koala, I really love you.