I'm the mistress of my girlfriend's ex

It's been a while since my girlfriend has been getting screwed by some guy in the ass. He comes over often, makes me show him my locked clitoris, does whatever he wants with my girlfriend while I'm forced to obey him, and then he spanks both of us, her for being his slut and me for being a little faggot. He enjoys humiliating me and it's clear that he and my girlfriend are plotting to keep me submissive and trained. I knew things were escalating; he made me call him papi whenever I referred to him, orders me to play with my dildo while watching his cock to make me desire her more, makes me ask him to fuck my girlfriend harder every time he takes her, and when he doesn't come inside hers, he comes on my face, and makes me spend long times with his semen in me. However, despite my permanent chastity and all the training he gives me to desire his cock, he has never fucked me, preferring instead my girlfriend's ass. Something that really amuses papi is my little girl tits. He makes me touch them while he screws my girlfriend, puts clamps on them and squeezes until I scream like a sissy. He says he'll make me get them pierced and hormone-treated so they're even more sensitive. I thought it was just a fantasy, but the other day he decided it was time to show me how sissy I am. While he was screwing my girlfriend on the bed, I sat on a dildo looking at his cock as ordered, unable to move because papi wouldn't let me. -Do you like it, slut? -he asked my girlfriend, who was whimpering submissively under him. -And you, little faggot, don't you want a real cock filling you up with cum like your girlfriend? I felt my whole pussy open but couldn't move because papi ordered me to. -Yes, papi, I need a cock that fills me up with cum. -Pinch your tits and tell me how much you want my cock. I obeyed papi -ah! Mhm, papi, I need your cock, I want you to break my ass and make me your slut, I'm masturbating my tits thinking about you breaking my pussy and filling it up with male cum! My tits were so hard, I was pinching them while papi said Even I didn't see myself, very busy with her slut. -I'll give you cock, little faggot, when you get your tits pierced. I'll choose how and with whom. I was so stupid, use the word: pussy open and red tits, nodded with a sincere yes papi thanks papi without thinking about how submissive I had become to that guy, who came deep into my girlfriend's booty before she had an orgasm like one I would never have again. The day I went to get pierced, daddy accompanied me from home, not without choosing my clothes first. He rubbed my tits until they were as hard as possible, put a pink training bra on me that matched my panties, which contained my plug well buried in my bum, a white girl's blouse stuck to my body, short and feminine shorts of my girlfriend, and told me to make myself up like promiscuous before leaving. He took me and my girlfriend by car to a place far away, maybe to humiliate me better without worrying about running into someone we knew. -Don't worry- my girlfriend said when we arrived, before getting out of the car- you'll just feel a little pinch, okay? She pinched my tits through my clothes, making sure they looked perfect and were hard. I whined and cried like a sissy and daddy laughed, taking my girlfriend by the waist to enter the local, me behind super embarrassed. The clerk didn't seem very surprised by the situation, although daddy was the one who described what he wanted to do to me, pointing out my hard nipples and asking how long it would take for them to heal, because I love playing with them. I was so red and felt my pussy squeezing the plug when I had to open my shirt and expose my bra, even more when I lifted it up to show my hard and rosy tits, like the rings daddy had chosen to pierce them. The rest was quick, a bit painful, but soon I was in the car, marked as the little faggot of my girlfriend's guy. I still can't touch my tits, so I have to put dildos on myself. ass for me to masturbate for now. Of course, just as we got home papi and my girlfriend went to the room, leaving me alone, and when they returned, papi still with his cock up, ordered me to turn around and show him my pussy. He quickly pulled out the plug and put it deep inside me, fulfilling his promise. The male cock feels so good now that I can't touch my girlfriend. I moaned and thanked, well sissy, until in a minute I felt him come inside me. -I came on my slut before and was just prepared to leave you full of cum and well plugged. Thank papi. -G thanks papi for filling me with cum- My girlfriend put the plug in again, leaving the semen inside me, having fun with me, faggot horned and marked so as to feel a minute of male cock inside hers.