By the time I get to the apartment my legs are shaking slightly and my breathing is fast. My belly muscles don't stop tightening as I try to command my body. I have controlled myself all afternoon, but it is because I have been sitting, not moving.

Christian is not here yet.

I leave all my things and go into the kitchen to prepare dinner.

Every step is a torture inside me. Every movement makes me hold back a groan. So I try not to think about the delicious sensation that slowly builds up between my legs wishing for a release. Each movement makes me grab the countertop, or the refrigerator, or hold tightly to the wooden spoon with which I stir the sauce for the pasta I am preparing.

I finish my dinner. Christian doesn't arrive and it's almost time to go down to the gym. Am I supposed to go down with this inside me?

I walk slowly to my room and just as slowly change my clothes for the exercise. I hang my bag over my shoulder and walk slowly down to the gym. I arrive in plenty of time and sit on a bench. No one arrives yet, so I wait while I calm my breath. At least I'll be okay as long as I don't move from my seat.

When my teammates begin to arrive, I begin to put the bandages on my hands. I haven't moved from my seat. But I can feel his presence when he make his entrance into the room. I look up and there he is in short shorts and a black tank top that fits him perfectly.

—Good afternoon guys. —everyone starts taking their places to start the class.

I get up while holding my breath and stand at the end of the class. I can see his gaze moving across my body and he looks at me with a frown.

—Are you all right, Ana? —he asks as everyone suddenly turns to me.

All eyes are on me.

Of course I don't feel well. I'm extremely excited and on the verge of orgasm and I don't think I'll make it through training without moaning audibly or coming.

—Perfectly. —I say with a smile.

Everyone turns to the professor again.

—Start warming up. —he shouts as everyone in front of me starts to warm up.

This time he doesn't ask us to form pairs. But from my place at the end of the class I can see that he doesn't look away from me as he starts to warm up. It seems that the rest of my classmates ignore the direction of his gaze and luckily for me they ignore me too.

The stretching is done without any difficulty. But when I get to the squats. I automatically bite my lower lip to contain a groan.

God! Help me!

I bite my lower lip so hard that I think I'm bleeding. Yes, I can feel the metallic taste of blood in my mouth.

I close my eyes all the time I do the rest of the exercises. This is no longer a torture, it is a torment that is sweeping away all the rational thoughts I have.

I feel my legs begin to shake. When I open my eyes I see Christian staring at me. Just with the warm-up I've ended up super agitated. I feel like I just ran a marathon.

—Pair up. —as soon as I hear his words I see him walking in my direction. —Ana! —he shouts my name and I shudder.

He stops in front of me. I look around as my partners begin to put on their gloves.

—Start with the bags! —he shouts without taking his eyes off me.

Everyone is moving away from us. And he takes a step to come closer to me.

—Ana! —he says to me now in a seductive tone that makes my legs tremble even more and my waist muscles tighten in delightful anticipation of what I know he can do to me with just a touch. —You still have them in you? —he asks quietly.

I knew it. I knew they were Chinese balls.

—I didn't know I could take them off. —I tell him by raising an eyebrow

—Didn't you come? —I can see surprise reflected in his face and in his tone of voice.

—You told me not to.

The truth is that I still don't think I've lasted that long. My body is screaming for an orgasm, or two, or three. I just want to get rid of the tension I've built up all day. And I know that all I need right now is a touch of his hands on my skin.

—We'd better get it over with. —I say to him as I walk with shaky legs to the bench where my bag with my gloves is.

Christian catches up with me when I get there.

—You don't have to keep holding on, you can...

—I want to prove myself. —I say to him as I put on my gloves and walk slowly towards one of the bags.

I can see that Christian doesn't take his eyes off me. And I begin to hit the bag with slight screams. The screams are to hide the moans of pleasure I feel every time the damn balls move inside me. I concentrate on hitting the bag and the movements of my legs as I scream, hitting and dodging. And while I'm training, I try to put all thoughts of the not so mysterious object inside me out of my mind.

—That's it for today, guys.

I'm exhausted. I walk slowly to the bench and sit down slowly. Already the pain under my belly is unbearable. As I take off my gloves and wraps I watch my classmates leave.

—Did you bring the phone? —he asks, stopping beside me when everyone has left.

—The phone? —what would I need it for here?

—Did you forget that you were going to take some pictures of me to show to the magazine tomorrow?

—I completely forgot! —damn Christian and his distraction technique.

—You can use mine and then transfer them to yours. —he says, stretching it out to me.

—Okay. —I grab the phone from his hand while he gives me a sensual smile

That smile is my downfall.

—Hey Christian, you have a lot left, I need to get out before we open again at 8:30 pm. —the girl at the front desk stops in the middle of the gym and looks at us both alternately.

—She need to take some pictures of me for an interview. Do you think I can use the facility?

—Of course. You can use it, you know.

—All right, we won't be long.

—Take as much time as you want, I'll close the front door, so no one interrupts you.

—Thank you. —he answers as the girl leaves the gym.

—We'll start whenever you want. —he says, interrupting my thoughts.

—Did they just lock us in here? —I ask, stunned.

—We have the whole gym to ourselves for half an hour. So I guess so. —he says with a twisted smile.

—Well, let's get started as soon as possible. —I tell him as I quickly stand up.

Only then do I remember what I have inside me and that I must take it easy. I take a deep breath.

—How about we start with some pictures hitting the bag. —I say holding my breath.

Christian goes to the punching bag and starts punching the bag while I take some pictures. They are not professional photos, but they will be useful to show tomorrow to the magazine. Christian stops briefly and takes off his sweaty shirt, letting it fall to the floor. Then he continues to hit the bag while I continue to take pictures.

Watching him train without a shirt is even better than watching him train with a shirt. I stand behind him and watch his back muscles contract with every movement. And I take several pictures like that too.

—I think that's enough. —I say to him with my breath coming in fast. It's no longer because of the balls hidden inside me, now it's because of his presence that affects my senses in every possible way.

Christian stops and takes off his gloves by throwing them on the floor. He stares at me. He has the same look as the wolf in his tattoo. A dangerous and predatory look. He walks in my direction. I cannot move. He takes the phone out of my hand and places it on a bench.

—I think we have twenty minutes left before the doors open. —he takes a step in my direction and stops in front of me.

His gaze has darkened with desire and I honestly cannot stand this torture any longer.

—Let's get those balls out of you. —he says as he takes my hand and pulls me towards the bathroom at a fast pace.

His hasty steps don't help much with my state of excitement. By the time we get into the bathroom I am on the verge of a delicious orgasm. Again.

This is the first time I've entered the bathroom here at the gym, and it's not how I would have imagined it. It has a huge countertop with several sinks embedded in it and beyond that are the showers. Christian closes the door and stops in front of the counter. He puts his hands on my waist and quickly pulls down my Lycra and panties to my ankles. And I quickly get rid of the sneakers. He holds me by the waist again and carries me to sit on the counter.

—Opens your legs. —he says to me in a hoarse voice of desire.

My gaze is lost in his muscles glowing with sweat. I look down at his entire abdomen to the package that is marked in his sports shorts. I look up again. Christian takes another step in front of me.

—Hold on to your hands and lean back.

I am no longer aware of anything. I do what he asks me without a second's hesitation. But I don't take my eyes off him. He rests his hands on my ankles and slowly pulls them up my legs until he reaches my sex. At this point I am already panting with pleasure. Even more. He slips a hand between my legs and I feel him pull the balls out from me while I bite my lower lip containing a moan of delicious pleasure.

—I didn't think you'd last that long. —he says to me as he takes one more step and sticks to my body.

—Neither did I. —I tell him about to spontaneously combust.

—How do you feel? —he says as he puts his hands next to mine.

—About to explode, I need you inside me. —I tell him as I sit upright and raise my hands to his shoulders.

—There's nothing I'd like better, but I don't usually come to the gym with condoms.

—I don't care! —I scream in exasperation.

Christian stares at me for a moment.

—I've always used protection, Christian, at least that was something the idiots I dated did well.

—But not me. There was a time when I didn't use protection. —he says to me in a whisper.

—Do you have any sexually transmitted infections?

—No.

—I trust you. —I tell him as I lower my hands to the elastic of his shorts.

—Ana! Don't tempt the wolf. —he says, clutching my hands around his wrists.

—What do you mean?

—That once I'm inside you, feeling that delicious pressure your vaginal muscles are exerting on me, I don't know if I can stop myself. Much less being skin to skin. Feeling your warmth.

—I trust you. —I repeat again.

Besides, it is likely that as soon as he enters me I will explode deliciously.

And I don't know if it's the begging tone with which I tell him. But he releases my hands and quickly pulls down his shorts and boxers. He sticks more to me. With one of his hands he guides his penis towards my entrance and I can feel the tip of It rubbing slightly against me. He raises his other hand all the way up my body to my neck. And as he holds me, with his gaze fixed on mine, he slowly buries himself in me, tearing out a groan. He stands still.

It's the first time I've had unprotected sex. And it feels strange. I can feel the warmth of his dick inside me as I tangle my legs behind his waist to bring him closer.

—I'm not quite in yet, babe. —he says as he breathes heavily.

And with another movement, I feel him getting even more deeply inside me.