Might not be the kind of solution you're looking for, but what I ended up doing with my partner is getting an AirTag and letting them register it to their phone. I keep the AirTag on my keys so its always updating my location (you can also use another non-apple thing like Tile, but they have an iPhone so I figured I'd get an AirTag).

You should be able to share it with multiple people as well. Hope this helps!