What about describing current relationships, and other types of relationships...
If the Other/unknown type was selected report says A had a wife B etc...
If the dating or similar relationship was selected line is A has wife B etc...
1. To say had or has it has to be defined is the relationship ongoing or thing of past!
2. Not every partner is housband/wife!
suggestion: depending on a relationship type line might say "A & B have/had dated " or "the type of relationship betweenn A & B is unknown" or something like that.