Years ago, I worked with a colleague called Martin, who honestly, I despised.

Martin was the kind of guy who had an opinion on everything, and he was determined that everyone should hear it. He’d march around the office, barging into any conversation he heard, loudly expressing his point of view, whether it was asked for or not (it was never asked for). The less well Martin seemed to understand something, the more confidently he spoke.

He was almost always wrong, but he wouldn’t hear it, he’d argue and argue and argue.

And it wasn’t like Martin was oblivious to what he was doing; he knew full well how rude and obnoxious his behaviour was. But he seemed to love angering people as much as he did the sound of his own voice.

Hate’s a strong word, but I hated Martin. I know you shouldn’t judge someone by how they look, but even his big, puffy, doughy face irritated me. Just the sight of him was annoying.

Martin frequently mentioned having a girlfriend called Lily. I half thought he was making her up, how could any woman stand his company for long? But then, on a work night out, Martin invited her.

What was even more surprising than Lily actually existed, was how gorgeous she was, and how much she contrasted to Martin. Whereas Martin was tall and wide and overweight and overbearing, Lily was petite and polite. She was short and slight, with wavy blonde hair, a pretty face, a winning smile, and cute freckles. Even more than that, Lily seemed pleasant. She was good fun, it quickly turned out.

We were in a bar that evening, all of us sitting at a long table. People kept getting up and moving around, and at some point, I found myself with Lily. She was easy to talk to, easy to make laugh. We got on. We flirted. We didn’t stop.

When it got late, when I announced I was going home, Lily said she’d come with me. We’d already found out that we lived on the same train line, on the very same stop. Martin seemed annoyed (for once) and said he’d take Lily back to his place, but she reminded him she had something on the next morning. She insisted she was leaving with me.

It was purely innocent, I actually believed that. I still didn’t think anything of it, the idiot I was, not even when Lily led us to an area of our carriage that was empty. Nothing could happen between us, obviously, I was sure, right up until the moment we sat and Lily leaned her face into mine and kissed me.

I love that rush of adrenaline and heat that hits you the first time you kiss someone new, as the world shrinks to just the two of you, when suddenly you become hyper-aware of the feel of their lips, the warmth and shape of their body as they press it into you, of their taste, of their unique scent. It was made even more intense that we were kissing on public transport and that Lily was Martin’s girlfriend, that it was wrong what we were doing.

I kissed Lily eagerly, without any thought of stopping. My dick was hard in seconds. Lily sounded like she was right there with me as she made these horny, sighing-moaning sounds.

She ran her hands all over me without any apparent shyness. Mine skimmed over her, grasping at Lily’s shapely thighs, going around to grope her ass as she leaned into me further. I held and squeezed Lily’s small tits through her top and her bra.

Lily closed a hand over the bulge of my cock in my jeans. She rubbed me like she was trying to get three wishes out of my prick. She was trying so hard to smother the fervent sounds she was making, I could hear it, but Lily wasn’t being all that successful.

It had been a warm night and Lily had been carrying her jacket as we’d boarded the train. Lily pulled it over and spread it onto my lap as she began to fiddle with my belt and my trousers.

I still didn’t stop her. I let Lily slide her hand into my jeans and underwear. I let her grip and pull on me. I allowed Lily to take my dick out so she could tug me under her jacket. I wasn’t even thinking about how much I hated Martin in that moment, I’d forgotten him, I just wanted Lily.

To my happy surprise, Lily went further. She took her lips away from mine, she ducked down and slipped under her coat. I had to put a hand over myself to stifle my groan as said lips closed around my dick, as Lily took me into her glorious little mouth.

She slurped on me with a level of enthusiasm that was gut-tightening. Lily held me tightly, she bobbed up and down quickly, she took me into her throat at the bottom of each dip. She jacked my cock with a hand with the same urgent rhythm. It felt like she was sucking on me as hard as she could.

It would have been an impressively eager blowjob in any circumstance, but the fact that Lily was my colleague’s girlfriend, the fact that there were people not sitting that far away from us, that we could be discovered at any second, it made it all so much more intense. I was panicking but I couldn’t bear the idea of her stopping.

But then I realised we only had three stops until we had to get off. Fuck. I told Lily so, expecting that she’d come to her senses, that she’d give up, but Lily took her mouth off me just long enough to loudly whisper, “then you need to come before we get there.”

She doubled her efforts. Lily went nuts under her coat, sucking me with feverish vigour.

She got me there quickly. As we passed two more stops, as we were minutes away from ours, the throbbing tension that was filling my lower body and my dick reached the very tip of me.

But then I realised: where the fuck was I going to finish? I was a heavy cummer, it would be too much for Lily to keep in her hands, and I couldn’t jizz all over the seats, that would be disgusting. Yet it was too late to hold it back now. I was there.

My whole body tensed and jerked as my orgasm hit me. I still had my fingers over my lips, I had to clamp them tightly to stop myself groaning out loud as fireworks exploded between my eyes, as what felt like molten-hot jism pumped out of me and into Lily’s warm, sucking mouth.

I filled her with pump after pump of it, but Lily took it all, she swallowed each load. She didn’t spill a drop. I was coming so fucking hard, I was coming in Lily’s mouth, Martin’s girlfriend’s mouth, the guy I loathed. If we’d been alone, I would have bellowed in pleasure.

Lily kept sucking me even as the last of my climax seeped out of my cock. She sucked me until I shook her shoulder through her coat and told her we were arriving at our stop.

She emerged from under it with a broad grin on her face.

I hurriedly put my wilting dick away, then we dashed off just as the warning tone was beeping and the doors were closing.

Lily asked me if I wanted to come back to her place.