Cabbage always has a heart; Green beans string along.
You're such a cute tomato, Will you peas to me belong?
You've been the apple of my eye, You know how much I care;
So lettuce get together, We'd make a perfect pear.

Now, something's sure to turnip to prove you can't be beet;
So, if you carrot all for me let's let our tulips meet.
Don't squash my hopes and dreams now, Bee my honey, dear;
Or tears will fill potato's eyes, While sweet corn lends an ear.

I'll cauliflower shop and say, Your dreams are parsley mine.
I'll work and share my celery, So be my valentine.

by Jeanne Losey 

I was looking for information on the origin of Valentine's Day today and stumbled across this poem.  I read it aloud twice to my kids before I got all the puns.  We all enjoyed it so much. 

The site where I found the poem also had quite a lot of other great information about Valentine's Day.  Enjoy!