Any good online story about a repressed male who comes out of his shell?

I mostly envision people trying to invite such a guy into an orgy, but even one-on-one sex is fine. Is there a story about a mild, kind and considerate guy who slowly drops his instilled conception about sex/orgy and learns to let lose and become passionate, active and dominant (but not an “alpha male” type of domineering jerk)?

Source: reddit.com/r/eroticliterature/comments/x7g7se/any_good_online_story_about_a_repressed_male_who