I am curious in giving RuneQuest Glorantha a shot, but as of now the only person I have to play with IRL is my girlfriend. If memory serves from about a decade ago, Call of Cthulhu lends itself well to duet-style play. However, I am unsure about RQG.
Both settings appeal to me, but right now it boils down to picking a starter set and going from there.
Thank you in advance for any suggestions or comments.