Should I lick my wifes pussy while she is being FU

We have been married a very very long time. Met her when she was just 17. (another blog on that later)
The idea of licking her pussy with another cock in it would never even been a thought before......but she keeps asking, telling me that I know exactly how to eat her pussy and that my tongue and a cock working on her pussy would be incredible. How many of you out there have done this for your wife? Do you think I should do this favor for her? I like taking pix and vids of her being a SLUTWIFE but that view ......... that's as close as it gets. So xhamster community.....give me your input.....what should I do....