The warm glow of the setting sun filtered through the large windows of Lucifer's office, casting long golden streaks across the floor and illuminating the chaos they had just created. The rich scent of expensive cologne, paper, and their lingering passion clung to the air, making the room feel like a secret haven where time stood still.

Lucifer sat slouched in his sleek leather office chair, his broad, muscular chest rising and falling as he tried to catch his breath. His tie hung loosely around his neck, the top buttons of his dress shirt undone. His brown skin glowed in the fading light, a light sheen of sweat glistening on his collarbone. Sunday lay atop him, completely wrapped around his body like a second skin, her petite frame contrasting against his much larger one.

His large hands rested lazily on her waist, thumbs rubbing soothing circles against her warm, bare skin. Sunday buried her face into the crook of his neck, still catching her own breath, the rapid pounding of her heart slowly settling into a steady rhythm.

Somewhere in the room, his phone buzzed again-another call.

"Don't answer it," Sunday mumbled against his throat, pressing a lazy kiss there.

Lucifer huffed a laugh, his deep baritone vibrating through his chest. "I ain't got no intention to, mama. Whoever it is can wait."

Satisfied with that answer, she curled herself even closer, her fingers running over the inked tattoos covering his arms. She traced the details absentmindedly, her nails lightly dragging over the designs, knowing he liked the feeling.

A comfortable silence settled between them, filled only by the occasional hum of the AC and the distant sounds of the city outside. Lucifer, still recovering from what she had just put him through, exhaled deeply, running a hand down his face.

"I think I'm gonna get fired because of you," he muttered, half-joking but also dead serious.

Sunday giggled, lifting her head to look at him properly. Her curls framed her face, her lips swollen from their earlier kisses, and her brown eyes sparkled mischievously. "You're a millionaire, remember?"

Lucifer rolled his eyes but couldn't help the small smile tugging at the corner of his lips. "Yeah, I know, but I actually liked my job. Kept me busy, gave me somethin' to do other than chasin' your ass around the house all day."

"You make it sound like I'm a full-time job."

"Oh, you are," he smirked, pulling her closer. "Best job I ever had, though."

Sunday playfully rolled her eyes, her fingers moving up to his short coils, scratching his scalp in the way she knew made his eyes roll back. Sure enough, he let out a content sigh, his shoulders relaxing even further.

"I hear you, Z," she said, her voice softer now, more serious. "I didn't mean to distract you from work."

Lucifer kissed her forehead, lingering there for a moment before pulling back. "It's okay, baby. You're more important than any job, and I ain't stressin' over it."

Her hand drifted down from his hair to his face, tracing the sharp angles of his jawline, then moving to his beard. It had grown in thicker recently, a mix of a stubble and a goatee that made him look even more handsome-if that was even possible. She brushed her thumb across it, grinning. "You're really committed to this whole beard thing, huh?"

He smirked. "You like it?"

"I love it," she admitted, playing with the coarse hairs. "Makes you look extra fine."

Lucifer's smirk widened as he leaned down, his lips brushing against hers. "So, you sayin' you'd marry a man with a beard?"

Sunday blinked, slightly taken aback by the question. "What?"

Instead of answering, Lucifer reached toward the small drawer in his office desk, pulling it open. Her eyes followed the movement, confusion flickering across her face-until he turned back around, a small velvet box in his hand.

Her breath hitched.

"Lucifer..." she whispered, her voice barely audible.

He held her gaze, his brown eyes filled with something so raw, so real, that it made her entire world still. "I wasn't plannin' to do this here," he admitted, rubbing the pad of his thumb over the box. "But sittin' here with you, holdin' you like this... I don't wanna wait no more."

Sunday swallowed hard, her chest tightening with emotion as he slowly opened the box. Inside sat a stunning diamond ring, its brilliance catching the dim light in the office.

"I don't need a job to tell me who I am. I don't need money to make my life full," he said, his voice steady and sure. "But I do need you."

Tears welled up in her eyes, her lips trembling as he took her left hand in his much larger one.

"You're my peace, Sunday. My best friend. My whole damn world. I don't wanna spend another day without knowin' you're mine forever." His deep voice softened, filled with something so unshakable it made her chest ache. "Marry me, baby."

Sunday's heart slammed against her ribs as she nodded rapidly, unable to form words at first. A tear slipped down her cheek as she finally choked out, "Yes. yes."

Lucifer grinned, slipping the ring onto her finger, the cool metal settling perfectly against her skin. It fit like it had always belonged there-like she had always belonged to him.

She threw herself into his arms, knocking the breath out of him as she clung to his broad shoulders. He laughed, wrapping his arms tightly around her waist and burying his face in her curls.

"I love you so much," she whispered into his neck.

Lucifer tilted her chin up, kissing her deeply. "I love you more, mama."

For a long time, they just sat there, wrapped up in each other, her hands never leaving his skin, his fingers never leaving hers.

Later that night, they lay in bed, tangled together under the sheets. The ring on Sunday's finger glowed under the soft moonlight filtering through the window, and she still couldn't believe it.

"Did you tell anyone you were gonna propose?" she asked, her voice drowsy but happy.

"Nah," Lucifer admitted, playing with a strand of her hair. "I wanted it to be just us. I'll call your dad tomorrow, though. Do it the right way."

Sunday smiled, pressing a kiss to his bare chest. "He's gonna be so happy."

"Think your sisters will approve?"

She laughed. "Demitra is gonna cry. Eliana's gonna scream. My mom is probably gonna make a whole speech about love and commitment then cry."

Lucifer smirked, rubbing her back. "Sounds about right."

She looked up at him, her brown eyes soft and full of love. "Are you happy?"

He didn't even hesitate. "The happiest I've ever been."

And as she snuggled closer, her hand resting over his heart, Sunday knew that this-this right here-was forever.