Roughly

When Amy takes of her panties, you swallow your saliva and carefully take a look at her pussy. But you don't have a chance to admire it too long. Amy doesn't plan to wait and impatiently she forces your head closer. You squeak in protest, but it doesn't bother her.

"Come on, lick!" she says.

It's not like you have a lot of choice, although it's hard to call what you are doing licking, you just stick out your tongue and Amy is doing the rest of the work, it's almost like with these tasks. She is grinding on your face, using you like a sex object, forgetting that you are a person and you need to breath. In normal situation, you wouldn't have any trouble and you could free yourself easily, as you are definitely more athletic than her, but right now your position put you in a big disadvantage. You can't get a leverage that will allow you to do a strong enough push and that's why you are on mercy of your "girlfriend". And right now she behaves like she has none. She doesn't pay any attention to your struggles, instead her grip on your head becomes even harder.

"Good girl" she coos "just a little more."

You wish you could curse at her, but you are concentrating on staying conscious. Now Amy's grinding become even more intense, she basically smothers you with her pussy. You are really struggling now, but Amy crosses her legs behind your leg, making it for you almost impossible to breath. And when you thing that it is inevitable that she will suffocate you her pussy spasms.

"Yeah, yeah, yeaaaaaaah!" scream Amy in ecstasy.

Your whole body goes limp, and then she finally let's you go. Her orgasm doesn't end immediately, she still trashes around for a good minute. Judging from her behavior her orgasm was pretty intense.

"Oh, that was great" she says dreamily.

"What the fuck? You can't treat me like that! I'm not your whore!" you says as soon as you have the ability to speak.

"Of course not" she answers "you are my lovely future housewife."

"I want you to leave!" you can't let her do that to you, you need to be assertive. But it doesn't seem to work.

"So" she asks you with a seductive smile "you don't want me to make good on my promise."

Of course you want to.

"Okay" you say trying to keep proud demeanor "you can do at least that" now she will feel how pleasurable is it to be totally out of breath.

You strip off and sit on your bed waiting for her to get on her knees, but instead Amy goes to her backpack. After a moment she comes back with something. Strapon harness.

"You'll have to get on your knees again for a moment" she says while getting it on "unless you want to take it raw?"