How should I go about telling my FSIL her boyfriend can not be in the family pictures even though my sister's fiance will be in them? I know my sister isn't married yet but she is getting married a few months after my wedding. Her and her fiance have been together for 6 years. My FSIL is only 23 and who knows what is going to happen with her relationship down the road. My fiance said I need to handle this because she is going to be pissed off. What is the best way to go about this with out offending anyone? The last thing I want to do is piss off my In Laws before getting married!
P.S, Me and my fiance are on the West coast while our families are back east. My fiance only met her boyfriend a few times.....