you should try read totally captivated!!!!
maybe try:
http://www.mangago.me/read-manga/blue_sky_complex/
http://www.mangago.me/read-manga/castle_mango/
http://www.mangago.me/read-manga/hana_wa_saku_ka/
http://www.mangago.me/read-manga/canis/ (this one is shounen ai but really good)
http://www.mangago.me/read-manga/kimi_to_parade/
http://www.mangago.me/read-manga/sorenari_ni_shinken_nandesu/
http://www.mangago.me/read-manga/complex_manda_ringo/ The art is not the best but I'm sure you will cry at the end.
http://www.mangago.me/read-manga/koi_to_wa_yobenai/
Do you guys know any yaoi manga that focus more on the plot and character development like Genwaku no koudou and super lovers
thank you~