When we sent out the save the dates they were in a relationship and living together. Since then they've gotten engaged and set a date for their own ceremony. Their wedding will be a few weeks before ours, so by the time of our wedding they'll be married.
Do I address it as if they are married or unmarried? When they receive their invitations it will be right around the time of their own wedding, either days before, or possibly just shortly after.
She plans to take his last name after the wedding.
What do you think?