mangas where the seme is shorter and cuter than the uke and pretends to act cute but is ac...

http://www.mangago.me/read-manga/koitomo_/

http://www.mangago.me/read-manga/ore_no_ushiro_ni_tatsu_na/

also mishima kazuhiko (the mangaka) has a lot of works like this!!

e.g. http://www.mangago.me/read-manga/uchi_no_tenshi_ga_kemono_deshita/

http://www.mangago.me/read-manga/stay_gold_koi_no_lesson_a_to_z/

These always make me giggle...I think they've all kinda covered it though.....

http://www.mangago.me/read-manga/takayanagi_no_bangohan/