Number 14 wears leather gloves. When we go out for dinner – we always go out for dinner – he makes a show of taking them off and putting them on the table beside him. He’s calm. I’ve never heard him raise his voice, or get agitated, or even visibly excited. Number 14 is the domliest dom I know, and I’ve never had sex with him.

Why is he on the list? I don’t usually include people I haven’t actually fucked, but the things he’s done deserve more credit than the catch-all title ‘play.’ Play can be anything from a quick spanking at a party to a full-blown throat-fucking in a dark alley. The latter, I think, deserves a bit more credit.

He likes to find places that are private but public. Hidden nooks and doorways where he can press me into the wall and order me not to make a sound. It’s incredible what a pair of leather gloves and a calm demeanour can do to stop me from making the noises I’d usually revel in.

On the hunt for one of these places once he found what looked like an abandoned room just outside the entrance to a block of flats – just a door in a wall that took us into a place no bigger than a cupboard, with broken glass bottles on the floor and no lights.

He put his hand over my mouth and whispered to me not to make a sound, then yanked my skirt up and my knickers down and touched me until I was trembling and could barely stand.

Every time someone walked past the door, or I breathed too loudly or made any noise, he grabbed my throat and stopped me breathing until they’d gone. He kept doing this, then stopping, then doing more, then stopping, until I was so weak and frustrated that I was crying, and had we been somewhere no one would have heard us I’d have been begging him to fuck me.

When I got to that point he pushed me down until I was squatting on the floor and shoved his cock into my mouth, always maintaining his total silence and calm.

He held my hair with his leather-gloved hands and shoved himself right into my throat. It didn’t take long – after a few minutes, just as I started to choke and bruise, he came hot and hard into the back of my mouth.

Ever the gentleman, he walked me to the train station and held me up when I stumbled.