Title: The Voice Between (and the monster in green)
Warnings/Enticements/Kinks: Submission, frottage.
Characters/pairings: Tony/Bruce (explicit); implied Tony/Pepper/Bruce; Hulk
Summary: Bruce thinks their relationship is as far from "safe and sane" as you can get, but there's a reason Tony Stark believes in him.
A/N: Enjoy, alwaysenduphere! I chose to pursue your liking of Tony/Bruce (and /Pepper) and a couple of your tropes (d/s, polyamory). Many thanks to cluegirl for the beta.
Link: LJ AO3