I planned on inviting one of my co-workers to my wedding but he recently started dating another co-worker who I can't stand. She is just to immature and seems to get really annoying when she drinks. I plan on having an open bar and I would like for him to come but I just can't stand his girlfriend and I don't think I will be able to stand her at the reception if she drinks. I would like to enjoy my wedding reception without any problems so should I still invite him and tell him not to bring her or just leave him off the guest list.