Fascinated by his cock

I am a muscular and handsome gay guy and I usually don't have a problem with finding a sexy guy for a night. But I fantasize of meeting some cocky, skinny guy I wouldn't normally be interested in - and when we are alone he just pulls his dick out of his pants and tells me to suck it. I tell him "Fuck off, dude", but his cock is huge and I can't take my eyes off it. He's clearly aware of that. "I told you to suck me off", he says shaking his semi-erect cock.

I am so horny in that moment, but my dignity still fights - "I'm not your bitch." But then he grabs my hand, places it on his penis and I just start jerking him. He grins and gently pushes me down, he commands "On your knees". I kneel, with my face close to his magnificent cock. For a second I take a quick glance at his face. But then he doesn't matter, I start sucking the huge dick in front of me vigorously. I can't stop playing with it, taking it out to lick it from base to top, to swirl my tongue around the tip, kiss and smell the balls, smack my face with it or just stop for a moment to look at it, admire it as it bobs in front of my face and then take it deep, testing my deepthrouthing abilities.

And then he grabs his cock and pushes my head back, keeping his penis out of my reach. I'm a bit perplexed, I breath deeply and after a second I look up at him. In this weird moment of silence I keep glancing between his face and his cock.

"Didn't you tell me that you're not my bitch?" he asks and I don't know what to do. "So, are you?"

At this point I don't care about my dignity and tell him what he wants to hear "Yes, I am your bitch". Just as I say that he grins and lets me suck him, all that humiliation makes me feel even more horny. He orders me to take off my shirt, he grabs my head and facefucks me. He shoots without warning in my mouth and when he takes his dick out, he smacks my face few times. I am still on my knees when he pulls up his trousers and goes away. And we both know, that he can get me back in that position whenever he wants.