Family Ties/Kiss him, deeply.
Your chaste, motherly kisses make him happy - but you are aching for something more intimate.
"Have you kissed a girl, Timmy?" you ask.
He shakes his cute little sandy-blonde head and smiles.
"Let me show you how, love," you whisper. Taking the back of his head in your fingers, you press your lips to his - first a quick peck. Then you kiss again, close-mouthed, and linger, letting your fingers trace themselves through his hair.
Then you whisper, "Now open your mouth a little." He does - but it's a wide O, like at the dentist's. You stifle a laugh, tilt your head to the side, bring your lips to his, and slip your tongue into his mouth. You whisper, "Do like this." He sticks his tongue way out. You give him lessons in French kissing. As he learns the subtleties, your fingers trace over his bare chest, belly, and back. Then you grip his shoulders and pull his face hard into yours while you give him the hardest, most passionate tongue kiss you've given in years.
There's no question you've had an effect - his boy's cock is by no means man-sized, but it's standing up in his shorts. Young cock sings a song of temptation.