When the rehearsal dinner invites went out, I gave my FSIL an "& guest" as she had been with her boyfriend for a year. They literally broke up the day I sent out the invites; she has now been on TWO dates with someone in the past week and a half and wants to invite him to the rehearsal dinner. I have NO problem with her inviting him to the wedding, but I feel like unless you are engaged, married, or have been in a long-time relationship with someone, you should not bring them to an initimate rehearsal dinner. Am I too harsh? The rehearsal dinner is ONLY family & wedding party... is there a tactful way to say, please don't bring your "boyfriend" of less than 20 days to my rehearsal dinner? Other singles in the wedding did not receive "& guests" for the rehearsal dinner.