Pictures in her Head

Let's paint a lovely picture in your head:
A canvas that's exciting and designed  
To get girls smiling sweetly - not to bed,
Though that may happen later; each may find
Herself seduced by verses that intrigue
And lead her thoughts to wander in the rain;
And who knows where such wanderings will lead?
To happiness? Or to a world of pain?
Or, maybe, both combined? You never know:
The tales that are whispered after dark,
When she is focused on the way each blow,
Both stimulates and makes a lurid mark
That will not last, of course, once shame has fled,
If we can paint that picture in your head...