Slave in Training

He slid his thick head between my wet lips, his shaft coming shortly after. He let out a low moan as he slid about four inches in. It was wonderful, being used by this big, powerful stud. I began sucking obediently, sliding back and forth on his cock, his heavy breathing encouraging me all the way. I kept sucking for several minutes, and as I slid my hand down to play with myself, he slapped my hand away. "No. Bitches service their man's cock, not theirs," I didn't feel the need to argue, his mere presence encouraging me to submit. I was just getting into it as he held my held still. "We're finishing this at home..." he zipped his pants back up as he clocked out and led me outside. I was scared, but this was wonderful. We got into his car and were on our way. "stroke me." I listened and began stroking his cock, which began to throb in my hand. His cock was thick and veined, surrounded by the stubble of his pubic hair. It was perfect. Several minutes later, we arrived, and he walked me inside. As he shut the door he slapped my ass hard and squeezed it. I felt so alive, servicing him. He walked me to the bedroom and sat on the edge of the bed, his cock out and ready. He didn't even have to speak before I was on my knees again. I began to suck quickly, rubbing his balls and deepthroating him. I gagged several times, but he seemed to like it. I sucked deep and fast as I could, and he held my head down as he let out a loud, deep moan, shooting his seed down my throat. Rope after rope, he poured his seed into me. After several seconds he pulled me off and I gasped for air. I could taste him in the back of my mouth, and I loved it. "that's it. Good girl..." my face lit up, turning bright red at the remark. I had always wanted to be feminine, and it was almost as if he could sense it. "MY good girl." he lifted me up and pulled a collar from his dresser drawer. I felt so nervous, but excited at the same time. Surprisingly gentle, he fastened it around my neck, a leather collar tight around my throat. "thank you sir." I said quietly, timidly. He chuckled and responded."I'm sorry, thank you who?" I blushed once again, but took comfort in every word that escaped my lips. "thank you...