R u saying that u want a manga where the uke have supportinve friend ?
well, to name a few...
http://www.mangago.me/read-manga/koi_wa_ina_mono_myouna_mono/
http://www.mangago.me/read-manga/ameiro_paradox/
also a story called Sekinin Torasete! (sort of) it can be read here or downloaded off of tumblr (probably)
http://goodmanga.net/karneval/chapter/84
I know they're not the best choices, but supportive friends are involved in the story (a bit) these ones are just the first to pop in my head. hope it helps.
natsume isaku is often good about writing supportive straight friends ^///^
Do you guys have suggestions or lists for yaois with supportive straight friends (not a love interest)
As always, thank you!! ٩(๑❛ᴗ❛๑)۶