my wife cucks me

just a short story but 100%true. my wife makes me wear her pants and lick her clit til she comes and wont let me fuck her.but she also made me take her to a lay by where she had arranged to meet a guy in a truck . i had to sit in the car and watch the truck rocking and then she sent me a pic on my phone of her face covered in cum . her man now texts me to tell me her pussy is all his and i have not to soil it. i realy enjoy this but want her to go one step further and make me lick the come from her pussy .what do you think i should say to her,