He stood in front of the mirror wearing nothing but a pair of black lace panties that barely contained his hard cock. The fabric stretched tight over his shaft and dug into his ass crack. His girlfriend, Lena, watched from the bed with a smirk. "Put the stockings on next, slut," she said. He rolled the sheer black thigh-highs up his legs, feeling the nylon cling to his skin. The garter belt came after, clipping into place with small metal snaps that bit his thighs. His cock twitched every time he moved.
Lena stood and grabbed the rope. "Hands behind your back." He obeyed, and she looped the soft nylon rope around his wrists, pulling tight until his shoulders ached. She tied his elbows next, forcing them together so his chest pushed out. The panties rode up higher, the lace rubbing the head of his dick. "On your knees," she ordered. He dropped, the carpet rough against his stockinged legs. She wrapped more rope around his chest, threading it under the garters and over his nipples until every breath made the rope scrape sensitive skin.
Lena stepped back and stripped. She left her own black thong on, then pulled a thick strap-on harness up her hips. The dildo that jutted out was eight inches of realistic silicone, veined and fat. She stroked it like it was real, smearing lube along the length. "Open your mouth, crossdressing whore." He did, and she pushed the head past his lips. The taste was chemical and slick. She fucked his face in short thrusts, making him gag and drool down his chin onto the lace panties. Spit soaked the front, turning the black fabric darker.
She pulled out and walked behind him. "Ass up." He leaned forward, face to the floor, bound arms straining. Lena yanked the panties aside, exposing his hole. Cold lube dripped down his crack. She worked two fingers in fast, scissoring him open while he moaned into the carpet.

"You love dressing like a girl and getting fucked, don't you?" He nodded, cock leaking into the lace. She added a third finger, twisting until he pushed back against her hand.
The dildo replaced her fingers without warning. She shoved in deep on the first thrust, stretching him wide. The panties stayed pulled to one side, the lace edge rubbing his balls with every stroke. Lena gripped his bound wrists for leverage and pounded him hard, the harness slapping his ass. Each thrust made his cock bounce inside the tight panties, the head catching on the fabric until he was leaking steadily. She reached around and grabbed his dick through the lace, jerking him in time with her hips. "Don't you dare come yet," she warned.
She pulled out, flipped him onto his back, and retied his ankles to his thighs so he was spread open and helpless. The garters framed his cock and balls. Lena straddled his face and pulled her thong aside. "Lick." He buried his tongue in her wet pussy while she ground down, smothering him. She came once on his face, thighs shaking, then slid back and sank onto his cock still trapped in the panties. The lace rubbed them both as she rode him, her juices soaking the fabric.
When she was close again she untied one hand and ordered him to jerk himself. He stroked fast through the wet lace while she fucked herself on his shaft. She came hard, clenching around him, and that pushed him over. He shot thick ropes inside the panties, the cum soaking through the lace and running down his balls. Lena kept riding until he was soft and oversensitive, then pulled off and shoved the cum-soaked panties into his mouth.
She left him tied like that for another twenty minutes, occasionally reaching down to squeeze his spent cock through the mess. When she finally untied him, she made him keep the stockings and garters on while they showered. The water ran pink from the lipstick she had smeared on his mouth earlier. He knew they would do it again soon.