I invited a bunch of coworkers to my wedding. The married, engaged, and those in long-term relationships all got a +1. But my single coworkers didn't (there's going to be 30 of them there, so plenty of people that they will know). One of my single coworkers RSVPed for her and a +1 even though she wasn't given one. Fast forward one month: turns out her +1 is a guy my fiance went to high school with and doesn't get along with! When I told my fiance who she was bringing, he was furious and said he's not allowed to come and that I have to tell her that she's not allowed to bring him. I can see his point, it's our day and it's our right to have who we want to be there with us. But it put's me in an awkward situation with my coworker. What do I tell her?