I tried making a collection of some of the best yaoi's that fit your description. They aren't all purely fluff and the variety is differed, but as far as my memory serves none of these have any second hand embarrassment scenes. Plus they're all good reads! There are some Sjounen-Ai's but I think they are rly good and I highly suggest them.
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Yaoi.
Brother Complex Onii San Kocchi Muite: http://www.mangago.me/read-manga/brother_complex_onii_san_kocchi_muite/
Sasaki San Way Kare Ga Suki: http://www.mangago.me/read-manga/sasaki_san_wa_kare_ga_suki/
The Man In The Mirror: http://www.mangago.me/read-manga/the_man_in_the_mirror/
Raion: Gotoki No Kuni Kara: http://www.mangago.me/read-manga/raion_gotoki_no_kuni_kara/
A Thousand Cranes: http://www.mangago.me/read-manga/a_thousand_cranes/
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Shounen-Ai:
Eyes Speak More Love Than The Mouth: http://www.mangago.me/read-manga/eyes_speak_more_love_than_the_mouth/
The Last Zombie: http://www.mangago.me/read-manga/the_last_zombie/
thank you so much <3
No prob!
does anyone know of any good yaoi that won't give me overwhelming amounts of secondhand embarrassment