You know, when you posess someone and try to kill off their entire race, they hate you.
Despise you, even.
So that's why Lucifer's eyes widened when he found his lips agsint Sam's and his callused fingers laced between the other's.
What also confused him was the warm feeling that weaved its way through his ribcage and down his spine until he felt like his whole body was on fire.
(and trust me, he knows better than anyone what that felt like.)
It was almost a disgusting feeling at first; harsh and unfamiliar as the world seemed to melt around him to leave just him and Sam.
Love.
As bitter as the thought was on his mind, it was something the angel was unable to deny.
The feeling he felt was absolute, pure love.
Something about the way Sam's lips felt softly pressed against his own, and the way his hazel eyes (which were half hidden by a mess of tousled brown hair) fluttered open as he pulled back to reveal a slightly pink and flustered face made his cold heart start beating faster and faster until he could hear it pounding in his ears.
Uncertainty was practically written across the other's face whilst their bodies stayed close together, ragged breaths mingling as they just glared at each other through clouded vision.
Sam moved his hand to cup the dry and cracking skin of Lucifer's cheek, an icy chill instantly shooting through his spine.
It was like- like Lucifer's flesh was burning so hot it was almost cold in a sense.
They stayed like that for awhile, an almost peaceful silence being shared between the two as they just simply looked at each other through new eyes.
It all hadn't fully registered in Sam's mind yet.
That's why Lucifer saw his adams apple bob and his pupils contract when everything hit him.
Sam Winchester was absolutely, positivelty in love with the person- no- angel- who was working to destroy the planet.
His grip involuntairly tightened on Luce's hand as he thought of the severity of his situation.
Dean would hate him.
So would Cas.
In fact- anyone he was in cahoots with- would now hate him.
He's literally in love with the devil.
Just by reading his face, Lucifer got a pretty good idea of what was troubling the Sam.
He pressed his forehead to Sam's and bit his lip before letting two words fall from his chapped lips;
"I'm sorry."
Inhaling sharply, he looked down at the ground beneath them before shaking his head, as if angry at himself.
"I'm so sorry." He gulped and pulled away, balling his scraped hands into fists until his knuckles were white.
Luce was almost startled a bit when he heard Sam's voice ring through the virtually empty building.
"Don't be."
Was all he got out before maneuvering his head to seal their mouths in another kiss.
Sam wrapped his bulky arms around the other tightly, body tense.
Lucifer opened his eyes long enough to see a tear sliding it's way down Sam's cheek.
He blinked in confusion, almost expecting for it to be gone by the time he opened his eyes again, but sure enough it was still clinging to the edge of his jaw.
Another was forming at the corners of his eye and he sniffled softly, pulling back from the kiss to grip Lucifer's shoulders and stare deeply into his blue eyes.
"Don't be." He repeated, voice breaking slightly before pulling Luce into a firm hug and burying his face into the other's shoulder.
And they stayed like that.
Bodies pressed together, Sam's skin warm against Lucifer's cold flesh.
They shared something that day.
Something that they both hoped would last a lifetime.
And it did.