In the Silmarillion, I'm almost sure I remember reading about a pair of people described whose powers were stronger when they were together. I think that they were a married Valar couple. As I remember it being described, it wasn't that they were actually co-laboring together, but simply that being near each other, they were stronger in their individual Valar abilities. (this would be somewhere towards the beginning of the book)
I've searched on google and here and can't find anything about it. I also tried thumbing back through the Silmarillion (I'm currently reading it), but couldn't find it. Does anyone know who this couple is, and maybe even where in the book I can find it?
If this goes without an answer, I may reread the book until I find it and answer my own question, but was hoping someone would know right where that was.