I know it is common etiquette to name the man first when addressing wedding invitations. However, what if I'm inviting a girlfriend of mine, plus her boyfriend whom she lives with? I don't want to put "Girlfriend's name and guest" because I know her boyfriend's name and want him to feel welcome. But I feel weird listing his name first, because, honestly, if it weren't for her, I wouldn't be inviting him. So I feel like she deserves being listed first on the invitation...... thoughts?