Finding out a friend is small shouldn’t affect the friendship. It appears I was born to play the role of “the friend with the small dick”. So being the “size challenged” friend in most scenarios, I expect discretion if a friend somehow found out that I was small. They should treat it as my personal private info and definitely not tell anyone else about it. Growing up I was outed for having a small dick by a “friend”…so I get a little shell-shocked showing my dick in public around any guys I might know. So for the most part I always try to keep a level of mystery between my friends and not place myself in a situation where they would see me naked. I also make it a point to respect their space, to leave or turn away if they are changing or nude for some reason. If by some chance, after all my efforts, a friend still found out my size, and if said friend chose to share that info with others, I would consider that a breach of trust and reconsider that friendship.