With apologies and acknowledgement to @Lyttlejoe who got there ahead of me with the name.

Welcome all to Valentown

But do not come alone

For entry through its heart shaped door

Must be with one you love.

Come with the one you're closest too

From whom you will not part

Come with the one who you adore

And hold close in your heart.

Come here to have the perfect time

To spend the perfect day

You can only visit once a year

So make that one day pay.

It can't be said with chocolates

It can't be faked with lies

You'll know your perfect valentine

When you look into their eyes.