linking contacts to spouses

in gmail I can add a spouse to a contact (ok, its not ideal as its just a free text field, not a link to a contact, but its close). I can do the same in the em contact details tab, but as these fields don’t synch between gmail and em I assume they identify themselves differently.
Is there a way of linking contacts that will synch between gmail and em?

we will take look on it and will try to implement this feature.