Arthur takes a break from helping his daughters to grab some sunscreen.

He finds his wife stretched out on a towel in her bikini, and his eyes prowl over her tanned legs and up her narrow waist to her breasts, gleaming bronze in the sunlight. Her face is shaded by the arm cast over her eyes.

Plunking down beside her, he can't resist reaching to smooth a hand across her stomach.

She jumps a little and sits up, lips curving when she sees him. "Your hands are wet."

"Castle building," he shrugs with a mischievous smile, and they both look over to watch their daughters industriously digging in the sand. Scout's bossy cadence floats toward them on the breeze, and Arthur doesn't have to look at his wife to hear her thoughts: She's just like you.

He suspects she doesn't wonder about his reply, either.

"You should go shirtless more often," Gwen comments after a while, surprising him.

He grins. "I was thinking the same of you."

She grasps his shoulder to shove him but instead she pulls him closer to kiss her, and he does so gladly, his hand sliding across her soft skin to rest just below her breast.

His breath comes uneven when they pull away. "Remember that time at the beach–"

"How could I forget?" she flirts, her hand exploring his chest. "Actually, I think about it quite often."

"Do you? Hmm," he nuzzles her neck, and she drops her head back. "We should do that again. But with less sand."

"I'm...not sure...it's family appropriate," she laughs, shivering as his warm lips caress her neck.

"Merlin can babysit," he mumbles. Then he's tasting her skin, the point of his tongue teasing her.

She hums quietly, and Arthur chuckles against her, his hands wandering.

"Have I ever told you that you make an incredibly sexy father?"

"Mmm?"

"I overheard the teaching assistants calling you a DILF."

He pulls back with a frown. "What's that?"

"I think it stands for Dad I'd Like to Fu–" Arthur covers her mouth with his hand barely in time and he emits a startled laugh, glancing over his shoulder to make sure his daughters didn't hear.

Her lips change into a smile beneath his fingers. "Sorry," she says, kissing his hand before he pulls it away.

"What am I going to do with you, Guinevere?" he rumbles for her ears only, then kisses her. "You...have such...a dirty...mou-mmph."