If they are very good friends of yours then either phone the wife or husband that are getting divorced and see how they feel. If one won't come because the other is then you will have to tell them you are caught in the middle and not invite them. The couple getting the divorce should make an effort to get along at one function.
If people don't invite you along to do something its no big deal you spend time with your other friends and don't let it bother you, make your own fun with others because its the others loss for not...
It depend on how the user intend to use the sentence and so both are correct in the sense that when using it for a single person, it will be ' the family invite " and when using it for two or more or...
The correct grammer would be "the family invites you". "Family" is singular in American English, and therefore should use the singular form of the verb.
Say, "Do you want to go out Dutch for dinner on Friday with me?" Dutch = each person pays for him- or herself. However, in that situation the dinner cannot be regarded as a date.