I recommend readers to start with 'End of the Line', the first part of this story.
*
As I lay in Irene's embrace, for I had discovered that that was her name, her daughter came in. About my age, she was a younger version of her mother. Not over slim and with full breasts and a rounded arse, at least, that was what I could make out of her shape under her clothes, and from my angle of view.
"Well mother" she said, "this looks like a nice specimen that you've brought home for us this evening."
"I think that it's for more than this evening, Helen" she replied.
Realising where this was headed I asked if I could again phone home to tell my parents that I wouldn't be home and was staying overnight with friends and then I returned to my former position in the couch, resting my head on Irene's breast and stroking her inner thigh.
Helen had left the room by the time I came back from phoning and now reentered wearing only a T shirt which showed off her protruding nipples and barely covered her crotch.