I & U

What are the stars without the moon complementing their presence ?
And where is US while I is being here in U's absence ?

When every phrase are deforming into overused expressions
'I love U' remains the most soothing serenade, I fashion.

..And IF tomorrow is a privilege I is not granted -
I's only regret would be - Taking U for granted !

..And IF that day ever arrives, I shall be U's permanent Shadow
One that'll be there when days are bright & even when nightful of Sorrow..