I’m wondering if maybe the spirits gave me my partner for that same purpose. Maybe because I wasn’t so confident with listening to my higher self until this decade, I needed someone in the physical realm to help keep me on track and away from superficial things. 
I’ve never met another person who will fight for the good of others as much as they do. It doesn’t matter if the person wants to do something; they will refuse to back down. It doesn’t matter how many years it takes; they won’t give up on someone unless that person completely forsakes them.
Because of that, they’re the only human here I trust 100% to have my back—not just in situations of safety and whatnot, but in everyday life with all the mundane and silly things that no one else would bat an eye at. One of our closest friends has said they’re the friend everyone needs but so few appreciate.
It’s surprising they don’t know Lucifer consciously. I feel they’re very similar every time I think about it. 
Edit: Hmm… I’m only now becoming aware that this might be the underlying reason I feel like this:
The opportunity cost of more time here is less time with them. 
I’m so silly for not realising this is what’s been bothering me.
It is time to make that change. After I post my challenge entry. I wrote it all up hours ago, but I wanted to add photos before posting and haven’t taken them yet.