This matters why? Quinn is like 37.
Torian, in my opinion, is far too young for the BH. And too pretty. And too boring. Ick.
I'd agree with that. I passed on the bh romance because Torian seemed much too young for my particular bounty hunter. I love the boy, but as a little brother-in-arms. I'm actually making a second bounty hunter with a much younger backstory that would be a better match for him.
Gault I love, but I don't know if I'd pursue a romance with him if he were made a LI. It would very much depend on how the romance was done. As it stands, he and my bh pick on each other, drink wine together while making fun of people, and generally are very good friends.
Edited to add: Gault is seriously an awesome character and I had a lot of fun writing him in my fan fic (shameless plug) "My Name is Solomon Crae."