I felt like these lines were the source of flow and feelings ...

It's like making love
On top of broken glass
^^^
Amazing comparison. I know exactly what you mean. So good it hurts.

Oh painful delight
Desire that comes with despair
^^^
This is also beautiful. Bitter sweet.

As you were sitting next to me
You never seemed so far away
^^^
Could never be close enough to someone you care about - and realization that also hurts like a bugger

This poem was almost perfect. When something is more than enough it would be "too" instead of "to"