You can leave your hat on - erotic short story

She had realised her mistake as soon as she'd pressed 'send', but it was already too late. The text that was meant for Millie, the one going on and on about how much she fancied Mark, had instead gone to, you guessed it, Mark. And yes, it might have said something along the lines of her wanting him to fuck her senseless. After that? Complete radio silence. But then, on her birthday there's a knock on the door.
On her doorstep - Mark, wearing slim-fitting clothes and a coat that is flapping in the wind. And most importantly, that stare that says it all. He has every intention of fucking her. But he's not going to rush into it. First, he needs to give her her birthday present. All she needs to do is sit back and relax: this particular gift is being delivered with music...