That Awesome Line

I just love this particular line. Problem is I keep forgetting it. I first heard it from Sarun. I remember writing it down on a napkin, in a pub. But I couldn't find it later. Almost a half year later (last week), I met up with Sarun at the same pub & wrote the line down yet again on a napkin. I fear that I'm going to forget the line again or lose the napkin. It has to be uttered exactly as it is written. Its a line from a Neruda poem, which one? go figure. Those fortunate enough to be trained in the 'Guru's patented technique de seduction' will find this as useful as boxer finds a rabbit punch useful. Use it wisely. And the line.....

" I want to do to you what spring does to the cherry tree"