Maude was softening with age. Her hard angles rubbed smooth by Harve's rough edges like sandpaper on quartz. While this getting used to each other was all fine and good, sometimes Maude mentally made out her grocery list during sex.
When they were young they were on each other all the time, every which way, unsatiated by passion that wouldn't bubble down to a simmer.
Now they both took a long while to steam and a short time to cool down.