This may not even end up being an isssue, but just in case I am curious...
FI has a close female friend. She is married but separated but does not want to get divorced and has been on and off dating another guy (FI has advised her against this but it is what it is). FI has said he doesn't want to send her in invitation for various reasons (her husband doesn't like him, her family won't want her to go, she will have trouble finding a babysitter, blah blah blah) I think it is a possibility that he may change his mind and decide to invite her (he already did this with some family members). My question is, if he does change his mind, who would be her SO? I've never met her but from what FI tells me it sounds like she goes back and forth between the boyfriend and husband. Would I simply give her a plus 1 since I know she would have a SO, I just don't know which one it would be, or address it to her and her husband and if she requests to bring the boyfriend instead we can just tell her it is okay?
I know this may not even be an issut but I want to make sure I am prepared in case he drops it on me at the last minute that he wants to invite her. Thanks in advance for any advice!