Just commenting to say: the Smiths have an arrangement where they can (and apparently frequently do) ask for each others' permission to sleep with other people, but are not supposed to develop any feelings for their other partners beyond friendship, which is kind of poly. That would be "Smiths" as in "Will Smith", who is probably at a higher level of stardom then Jon and Stephen. From what I've seen, as long as there's a lack of drama, it gets some passing interest as something odd that celebrities do, and then attention gets refocused to things with drama, like whoever is being made to go to rehab.