Romance with no insta-love

i think these...
http://www.mangago.zone/read-manga/koimonogatari/

http://www.mangago.zone/read-manga/blue_sky_complex/
only one side is kinda insta
http://www.mangago.zone/read-manga/yuki_no_shita_no_qualia/

http://www.mangago.zone/read-manga/sorenari_ni_shinken_nandesu/

http://www.mangago.zone/read-manga/ameiro_paradox/

http://www.mangago.zone/read-manga/kimi_to_parade/
http://www.mangago.zone/read-manga/bed_no_ue_no_tengoku/
http://www.mangago.zone/read-manga/gravity_eyes/
http://www.mangago.zone/read-manga/boulange_no_koibito/
http://www.mangago.zone/read-manga/recipe_no_oujisama/
http://www.mangago.zone/read-manga/dear_green_hitomi_no_ounowa/
http://www.mangago.zone/read-manga/dear_green/ (sequel)
http://www.mangago.zone/read-manga/calorie/
http://www.mangago.zone/read-manga/brothers_yamamoto_kotetsuko/
http://www.mangago.zone/read-manga/kiraboshi_dial/
http://www.mangago.zone/read-manga/sore_wa_isshun_no_hikari_dewanaku/
http://www.mangago.zone/read-manga/link_boku_to_kimi_no_aida/
http://www.mangago.zone/read-manga/junjou_romantica/
http://www.mangago.zone/read-manga/haru_wo_daite_ita/

New York New York, they love till they grow old

http://www.mangago.zone/read-manga/metro_dog/
http://www.mangago.zone/read-manga/seven_days/
http://www.mangago.zone/read-manga/hatsukoi_no_atosaki/
http://www.mangago.zone/read-manga/merry_checker/
http://www.mangago.zone/read-manga/slow_starter_ichikawa_kei/
http://www.mangago.zone/read-manga/himegoto_asobi/
http://www.mangago.zone/read-manga/sekaiichi_hatsukoi/
http://www.mangago.zone/read-manga/hana_no_mizo_shiru/