Well, it's no "Zombies Are A Girl's Best Friend",

[fuzzybluemonkey]

but this is what happens when I listen to Come What May over and over again while contemplating this prompt (I was also making book labels at work, but that's neither here nor there).

Ryan:
Never knew it could be like this
'Cause I've never kissed a guy before
Want to ignore but can't dismiss
Once just bros, but now we're something more
Listen to my heart, can you hear it sing
Telling me that this is more than a fling
Work may get in the way of things
But we're partners until the end of time

Let them scoff, let them scoff
I'll be with you until the wheels fall off

Esposito:
We have always been up in each other's space
We have always moved in such concerted grace

Both:
You were always there right in front of my face

Esposito:
I'm so glad I found you

Both:
And there's no crime spree too vile, no corpse that's too fried
Call my last name, and I'll be there by your side
Castle may blather and Kate may smile wide
But I love you until the wheels fall off

Let them scoff, let them scoff
I will love you until the wheels fall off
Oh let them scoff, let them scoff
I will love you

Esposito:
With you I want to work on every case...

Both:
Let them scoff, let them scoff
I'll be with you until the wheels fall off

When you're in trouble, you can call DW.