I would definitely recommend Doukyuusei if you haven't read it already :)
I love this kind of manga too~ Honto Yajuu, Nirameba Koi, Lucky Number 13, Negative-kun To Positive-kun, Junketsu Drop! (〜￣△￣)〜
Oh! I would recommend Rutta to Kodoma
http://www.mangago.me/read-manga/rutta_to_kodama/
LOLLL THEN YOU MUST READ MANGAS BY KANDA NEKO. THEY ARE THE CUTEST SHIT EVER. http://www.mangago.me/r/l_search/?name=kanda%20neko
Perhaps you can consider:
http://www.mangago.me/read-manga/junjou_ookami_san_to_kohitsuji_kun/
http://www.mangago.me/read-manga/hatsukoi_wa_gunjou_ni_tokeru/
http://www.mangago.me/read-manga/number_call/
http://www.mangago.me/read-manga/nise_x_koi_boyfriend/
http://www.mangago.me/read-manga/kirakira_no_hibi/
http://www.mangago.me/read-manga/kono_ore_ga_omae_nanka_suki_na_wakenai/
http://www.mangago.me/read-manga/kore_wa_koi_ni_fukumare_masu_ka/
http://www.mangago.me/read-manga/twinkle/
http://www.mangago.me/read-manga/mizuiro_to_pinku_sore_kara_daidai/
Not Highschool Students:
http://www.mangago.me/read-manga/cafe_latte_rhapsody/
http://www.mangago.me/read-manga/itadakimasu_gochisou_sama/
http://www.mangago.me/read-manga/ohayou_to_oyasumi_to_sono_ato_ni/
http://www.mangago.me/read-manga/akihabara_fall_in_love/
Thanks
Looking for fluffy yaoi or Shounen Ai manga to gush over. Would love for them to be high schoolers. Or just be in school life. Romantic and sweet. Cutest overload!