[Keeper of Dol Guldur]

I know we've all discussed the topic of Aule's pupils going bad, because of similarity to Melkor's mindset before, so this topic may seem a little similar to previous ones, but could Feanor and Saruman have been friends at one point? Or how about rivals? Both were very much alike, great pupil's of Aule, possessive and selfish, and both turned from their paths to find evil and folly. Both had raven black hair also. And who knows, maybe long before Melkor had seduced Sauron, Saruman and Sauron were best buddies as well. It does make a lot of sense later on. So Saruman and Feanor, Curunir and Curufinwe, were they friends or rivals under Aule's tutilege?