Back story: My MOH has recently seperated from her husband. She moved back home and he is still living in a totally diffrent time zone. When she came back she started seeing this new guy (and no they are not even divorced yet). So in my personal opinion that is deffantly cheating. The dilema: I know I have a while to really start worrying about this but I don't know what to say to her. She has already mentioned bringing this new guy to the wedding as her guest. First off, this guy drives FI and I crazy. He is loud, annoying, and just straight up obnoxious. Second, I dont think its appropiate to bring the guy you are cheating on your husband with to a wedding. Its a totally oxymoron. Third, one of her husbands best friends is in our wedding party! How do I tell her without upsetting her that he is not invited to the wedding? I can't even use the exuse that only seriouse S/O's are invited. She already knows that we are letting everyone bring one.