With our party looking into enchanting items, my character has finally got options to progress towards his endgoal. Marriage to his childhood sweetheart...in 50 years time. They're dwarves, you can't expect them to rush it...but we also wouldn't want to risk her forgetting him either...

To do that he needs to be able to acquire a spell/item/ritual that allows two lovers to be aware of the health, emotions and general location of each other.
I know something like it exists, but cannot recall it, and my google-fu is weak. It was probably 3.x, and possibly Faerun associated, given how long ago I recall it from and what I was playing at the time.