The philosophy text was open on his dining table, but Paulina couldn’t focus on Kant. Mickle stood behind her chair, his body a warm wall at her back. His hand moved from the page to the nape of her neck, his thumb stroking the sensitive skin there. ‘The categorical imperative,’ he murmured, his lips close to her ear, ‘demands we act only according to maxims we would will to become universal law.’ His other hand found the hem of her skirt. ‘What is your maxim tonight, Paulina?’

His thumb pressed a slow circle into the base of her skull. The sensation traveled straight down her spine, a live wire. She stared at the dense German text, the words swimming. The lamp light pooled on the polished wood, glinting off the silver cufflink at his wrist. The one that matched the one under her pillow. Her skin felt too tight, too aware.

‘I don’t know,’ she said. Her voice was thin.

‘A poor start for a lesson.’ His fingers slid under the wool of her skirt, tracing the bare skin of her thigh. His touch was warm, deliberate. ‘The text proposes a test. Could you will that every student should be touched like this by her teacher? In this room, on this night?’

She shook her head, a tiny movement. The denial was automatic. Honest.

‘No,’ he agreed, his breath stirring the hair by her ear. ‘Neither could I. So we are already exceptional. We operate outside the universal.’ His hand crept higher, the rough pad of his thumb brushing the edge of her cotton underwear. She jerked, a full-body flinch. He went still. ‘This is the privacy my proposal purchased. This room. This hour. No one will knock. No one will see. The only witness is your own conscience. And it has already written its testimony, hasn’t it?’

He was talking about the diary. He was always, somehow, talking about the diary. The proof of her want, held in his hands a lifetime ago in that soundproof room. Her face burned. His fingers didn’t move from that charged border, skin and cotton.

‘Read,’ he commanded softly, nodding at the book. ‘Aloud. The next paragraph.’

Her throat closed. She swallowed. ‘“Act so that you treat humanity, whether in your own person or…”’ Her voice faltered as his thumb dipped beneath the elastic, just a centimeter. A hot, shocking point of contact. ‘“…or in that of another, always as an end, and never as a means only.”’

‘An end,’ he repeated, the word a low rumble against her shoulder. His other hand left her neck, came to rest on the table beside the book, caging her in. ‘Not a means. Do you feel like an end, Paulina? Or do you feel like a means to my end?’

He pressed down. The heel of his hand settled firmly over her, through her underwear. A blunt, undeniable pressure. She gasped, her hips lifting off the chair seat involuntarily.

‘Answer.’

‘I don’t—’

‘You do.’ He moved his hand, a slow, grinding rotation. The cotton was already damp. He made a soft, acknowledging sound. ‘Your body is confessing. Again. It’s more honest than your mouth.’

He kept the pressure steady, that maddening circular motion, while she trembled. It wasn’t enough. It was too much. She was straining into his hand, chasing the friction, and he was letting her, but controlling the pace, the depth. A tutorial. Her nails dug into her own thighs.

‘Please.’

‘Please what? Use the language of the lesson. Are you an end or a means?’

‘An end,’ she choked out, desperate. ‘I’m an end.’

‘Then this,’ he said, and his fingers finally slipped inside the waistband, past the cotton, and touched her directly, ‘is for you.’

His skin was hot. His fingers were clever. He found her slickness, spread it, traced her with a terrifying focus. She dropped her head forward, a sob catching in her chest. The book blurred. He explored her with the same deliberate patience he used to diagram an argument on the blackboard—mapping the terrain, testing responses, noting where she clenched, where she shuddered.

‘Your maxim,’ he whispered, his mouth against the shell of her ear as his finger slid inside her, one slow, inexorable inch. ‘Is it to come for your teacher? In the middle of a philosophy lesson? Is that the principle you would legislate for all of humanity?’

She couldn’t speak. She could only feel the stretch, the fullness, the shocking intimacy of his finger moving within her while they both looked at Kant’s forbidding text. He added a second finger. The burn was exquisite. She cried out, her back arching.

‘Shhh,’ he soothed, but it wasn’t gentle. It was possessive. His other arm wrapped around her waist, pulling her back flush against him. She could feel the hard ridge of his erection pressed against the base of her spine. He worked his fingers in a steady, curling rhythm, hitting a place that made her vision whiten at the edges. ‘This is your private tuition. This is the lesson your diary requested. Pay attention.’

She was close. So close. The coil in her belly wound tight, ready to snap. He felt it. His rhythm changed, slowed, became almost cruel in its precision.

‘Not yet,’ he said. His voice was strained, his own control thinning. ‘Look at me. Look at me in the window.’

He turned her head toward the dark glass of his balcony door. It reflected the lamplit room, a ghostly tableau. Her, flushed and desperate in the chair. Him, fully dressed behind her, his face a mask of intense concentration in the shadows, his arm wrapped around her middle, his hand buried in her skirt. A stranger’s obscene portrait.

‘Watch,’ he commanded. ‘Watch yourself learn.’

He resumed his movements, faster now, deeper. She stared at the reflection of her own face, eyes wide and mouth slack with pleasure. She saw his gaze, dark and fixed on her image in the glass. The connection was electric, more intimate than if he’d been looking at her directly. He was watching her watch herself fall apart.

The orgasm ripped through her, silent at first, a seismic internal shudder that locked her muscles. Then a broken sound escaped her lips as the waves crashed over her, her body clamping down around his fingers, her head falling back against his shoulder. He held her through it, his fingers still inside her, gentling now, drawing out the last pulses until she went limp, boneless against him.

For a long moment, the only sound was their ragged breathing. The smell of her arousal, musky and sweet, filled the space between them. Slowly, he withdrew his hand. He brought his fingers to his lips, his eyes still holding hers in the dark window. He tasted her. A deliberate, silent gesture that sent a fresh shock through her spent body.

He lowered his head, his mouth brushing the sweat-damp skin of her temple. ‘Class dismissed,’ he whispered.