This may sound complicated, but bear with me. One of the girls in my small group at church has become a good friend and is invited to the wedding. Recently, without telling many people, she started seriously dating a guy...who just happens to be an old childhood friend of mine. His family has been SUPER close with my family for years; they even brought us food when my mom passed away and everything. However, I hadn't talked to them at all since then, so I didn't invite them to the wedding.
I've been allowing guests a date only if they're in a committed relationship. So now, she's bringing a date and I feel like it would only be polite to also invite his family. But the wedding is 46 days away and I don't know they're address. Is there a way to go about inviting them without it being incredibly rude because it's sort of last minute? Or should I just stick to the original plan of not inviting them but allowing their son to come?