I think it would be great if there was a progression of events..
1) Wife thinks up a wicked idea and gives husband an unexpected snowball...
which he at first is reluctant to admit he likes, but it becomes an occasional treat to their sex. Then, one night when she is feeling particularly dominant, he cums 'too soon', and she isn't done. Then, she introduces the submission to:
2) eat his creampie out of her.
This starts a trend to the idea that every time he cums, he has to clean up.. He starts getting told to jack off on her ass, her breasts...
This leads to her, once again deliciously dominant, setting up a blowjob that he gives to her friend. She feeds him the cock, teasing him vocally all the way, urging him to 'do his best' until the guest fills him with copious amounts of fresh cum.. The shame/embarassment and enjoyment combine to cement him into his new fetish. While he is still fucking his wife, his desire for cum is now insurmountable.
Friend becomes a frequent visitor to our now cum-hungry husband. Now, however, one night, he does the wife... And hubby is there to clean....
Mmmmm... I WISH!
-U
1) Wife thinks up a wicked idea and gives husband an unexpected snowball...
which he at first is reluctant to admit he likes, but it becomes an occasional treat to their sex. Then, one night when she is feeling particularly dominant, he cums 'too soon', and she isn't done. Then, she introduces the submission to:
2) eat his creampie out of her.
This starts a trend to the idea that every time he cums, he has to clean up.. He starts getting told to jack off on her ass, her breasts...
This leads to her, once again deliciously dominant, setting up a blowjob that he gives to her friend. She feeds him the cock, teasing him vocally all the way, urging him to 'do his best' until the guest fills him with copious amounts of fresh cum.. The shame/embarassment and enjoyment combine to cement him into his new fetish. While he is still fucking his wife, his desire for cum is now insurmountable.
Friend becomes a frequent visitor to our now cum-hungry husband. Now, however, one night, he does the wife... And hubby is there to clean....
Mmmmm... I WISH!
-U
You should also write it up in the 
