Simply

It's a small, simple, show of affection.

Intrepid hearts expand, minds meld, made one of two.

Love triumphs over hesitation.
Of such sweet union do I sing praises.
Viridity unparalleled is the only description,
Effectively portraying this that I hold dear.

Years within days, a lifetime we've known together.
Omnicient Fates, before us they've laid a bramble laced path,
Utter strength will carry us above trial and tribulation.