I usually go to bed after my wife. When I get under the covers she sometimes wakes and will turn and wrap herself around me. I guide her hand to my swelling penis. She will rub me almost to climax and then I usually turn and finger her until she moans and arches her back. I then finish her off in the classical way.
One day, I decided to try something different. When I turned to stroke her I took her hand off my cock and guided it to her wet spot. I guided her fingers inside her labia and made her rub her clit.
At first she pulled her hand away. But after a day or two of repeating the behaviour she decided that she really liked it. I moved down to her pussy to watch her work her clit. My cock was so hard.
She came in a gush and grabbed my hard penis and began to squeeze and pull. She moved above me and lowered her 40DDs to my swollen member. I rubbed between those magnificent titties until I exploded. I sucked her nipples and rubbed the cum into her boobs.
She smiled and asked if I liked it. I nodded a most emphatic yes!