Bro. you have to recognize your boundaries and confidently push past them. if she's not into it she'll say no.
fukk her like an animal man. Give into your animal instincts. Bite her. if she ain't switching positions fast enough punish her. or man handle her. Put her in the position you want her in. Control her orgasm. She doesn't get to cum until you allow her.
You own her body. Her arms are yours. Claim them. Grab them and tell her "these are mine now." You control the air she breathes and everything she feels.
The key is to condition her to associate her orgasm with pain. When she's feeling pleasure make her feel pain too. Tell her, "This feels good to me." lol use whatever words you want.
let her know you get pleasure from her getting pleasure from something bad. girls Iike pleasing their man. they like taboo.
Tell her, "are you a good girl?" if she says yes punish her. if she says no punish her. Then say, "bad girls get punished, I like bad girls, are you a good girl?"
Be a sadistic motherfukker man. Be petty. Tell her the other dudes she's was piping were bytches. Then make her feel pleasure. Prove your point. Only give her D when you want to.
I like to completely control my partners. I dunno if this is exactly what you're looking to do but I hope this helps. Hit her man. trust me she'll like it.
Touch your thumb to her chin, keep your wrist straight and raise your hand slightly and bring it back down. Slide that hand down to her neck and lightly choke her. Kiss her too. She'll melt for you.