I'm sending out Save the Dates next month or in early October so I'm starting to put together my guest list. I have a couple friends that I know will be invited but I'm not sure how to address the envelopes. They are all currently in relationships, however, they have a history of relationship bouncing. I know couples no matter how long they've been dating are invited to the wedding when the invites go out so whoever they're dating at that time will be invited with them. There is just a good chance it isn't who they are dating now...Do the Save the Dates go out to just our friend? Or do they go out to both and will change with the invites if they're no longer in a relationship?