There you are having morning sex with your girlfriend again; second time this month- on a weekday this time. She got upset with you last month because you barely touched her at all and she's starting to feel like something's wrong. You only have so many more "I'm not feeling it today"s in you before she starts to suspect something- something that isn't there. You're no cheater, you'd never do such a thing. It's just that sex is becoming so mechanical. You've lost any passion you might have had and just go through the motions to make her happy. Even now when you should be reaching the height of passion, you're just thrusting into her robotically while your eyes gloss over to the pillows and she stares at the ceiling.

The alarm goes off before either of you orgasm and you get up, mumbling a tired "...sorry..." and get ready and leave for work.

It's almost 3pm and you get back to your desk after a long meeting to find 9 missed calls and a few texts. It's your girlfriend. "Please, not today..." you murmur. You take a moment to scroll through it all... [she left] you think to yourself. You're taken aback but, still, you knew this was coming. You're both dejected and relieved at the news. The last thing she texted you was "I'll come by for my things this weekend". [Just like that, huh?] You think [two years, ended with a text]. You slink back into your office chair and let out a defeated chuckle "and just a day before my 28th birthday too" you remind yourself.

As usual, you're the last one out of the office at 6pm. You switch off the lights and head straight to the gym to burn off all these bad feelings.

You walk into the gym at your usual time and, like always, He's there; Mark's there. You two have been gym-friends for a while, going on like three years now. You've never really hung out, though, beyond the gym. He's probably 15 years older than you are and you doubt you'd have many shared interests beyond fitness. He's tall broad-shouldered with black hair that's greying on the sides and usually a tightly trimmed beard. He spots you sometimes during bench presses and he's taught you how to lift so you wouldn't hurt yourself. He's cool, confident and genuinely a good person. You're kind of envious of him, actually. To you, he seems perfect in every way.

He hasn't noticed you there yet, so you watch him from behind as he crouches down and dead lifts and ungodly amount of weight. You think [Man, look at him standing straight up like that; his muscles almost ready to burst, lifting up what's probably three times my weight. I bet he could throw me around like a rag doll if he wanted to]. He drops the barbell, lets out a loud exhale and puts his large rugged hands on his hips. After a few breaths, he turns back to you, smiles and exclaims "Your turn now!".

You're suddenly flustered [What? My turn?! What is he talking abou...] you internally scream, but all you actually muster is an awkward "uhhh...". "Oh, I thought you were waiting for me to finish so you could go" Mark says with a reasurring voice as if he picked up on your internal frantic state. [Shit. I'm an idiot] you think [He could see me in the mirror in front of him]... "Oh yeah" you blurt out "I was thinking maybe you could show me how to do a weighted squat. I heard its kinda dangerous if you don't know what you're doing". He looks you up and down with half a smirk for a second. "Ok" he replies "let's get the plates off first". He puts back all the weights he was using and hands you the barbell.

You're now standing in front of the mirror with him behind you and the barbell on your shoulders. "Jesus, Mark. I'll never get used how much bigger you are than me. You're like a foot taller and a foot wider than me". Mark lets out a big hearty laugh and jokingly scruffs your hair. "Alright, lets focus now" he says in a slighly more serious tone. "First thing's first. No weights until you get the form down, got it?". "Sir, yes sir" you bark back with a playful smirk". "Right. Now, lets see your squat". You confidently squat down knowing theres practically no weight to the barbell and you'll be ready for him to move you up a few pounds. "No no no. You're too hunched over. You'll hurt yourself and I can't have that" he said as he lifted you from your embarrassing squat position. He takes the barbell away and puts it back on the rack. "Lets go even more basic".

He puts your hands behind your head and moves your feet slightly closer together than the near splits you were doing before. "Now relax your body and let me guide you through this, ok?" He said with some concern in his voice. You feel oddly reassured so you agree to give him control.

Towering behind you, he puts his hand on your head and gently pushes you down. Slowly, you submit to his force and and keep going down. "Here's the first mistake" he enthusiastically exclaims "your whole back's bent forward. Lets fix that". He moves both of his brawny hands to your shoulders and gently pulls them back to straighten your form.

"Next lets go a little deeper" he said pushing you down by the shoulders. You feel your back straining and inadvertently let out an audible "ugh". "And here's the next obstacle" he asserted "I need you to focus on the feeling in your core for me". You shake your head in agreement as he puts one hand on your chest and the other on your lower back. "Now relax and arch your back for me". [God this is so weird] you think yourself [I'm in half a squat and he's manipulating my body like a towel in his hands... but I haven't gotten a stretch in my back this good in ages and it feels... so~ fucking good]. "Hey don't go too limp now" Mark chuckles, which made you tense up even worse than before. He laughs while holding you in place "I'm sorry. I didn't mean to make you feel uncomfortable. It just felt like you were falling asleep and I couldn't resist".

Your face is now very obviously flushed with embarrassment. You can't even make eye contact with him through the mirror. "alright alright" he playfully apologizes "no more goofing around on my end, I promise". "Ok" you mumbled "I won't fall asleep again either". You both share a laugh then continue.

He slides his hand from your chest across your torso just until your belly button. Your heart skips a beat at that motion but you dismiss the strange tingle it makes you feel all over. He pushes you down further into a deep squat. "You're going to feel it here" he reassures you, moving both of his hands to your sides. His palms are now on your hips with his fingers extended back towards your glutes and his thumbs running along the crease between your thighs and groin. You feel your heart rate increase as he gently guides you down deeper. [Fuck... no]... [this feels a little weird but I don't want to say anything]. "Let's loosen you up here" he whispers as his thumbs press down firmly, slightly moving your thighs apart. His chest presses against your back. [He's pulling my shorts back with his thumbs] you panic [I should say something but... I don't want this to stop...do I?].

His thick muscular pecs press against your back, his chin rests on your shoulder while he looks down at his hands kneading your hips and his thumbs gently grinding closer and closer towards your dick. [Fuck I can't take this] you think as your self control wanes [I'm getting hard. Why am I getting hard?...I feel so small... he smells so fucking good. What the fuck is wrong with me?... I'm not gay... I don't want to deal with this right now]. In spite of your mind struggling hopelessly, you're almost completely erect and you're feeling butterflies in your stomach. At the same time, you're terrified that he'll notice.

Mark's thumbs continue grinding down. [Oh god, oh god. His thumbs are so close to my shaft and I'm rock hard] you think as your ass reaches the floor in a deep squat.

"Excellent work" Mark exclaims as he picks you up out of your squat and back upright again. You stand up completely disoriented and at a loss for words. You look at your reflection and quickly pull your shirt over your raging boner praying he didn't notice. "That's it for me today" he says as he gives you two congratulatory pats on the shoulder "need anything else before I head to the shower?". "Nah, I think I'm done" you reply " I'll hit the showers too". [What the fuck am I doing?... I just got here. Why did I say that?].

Part 2