can you recommend some old shojo mangas with a kinda smart female lead with a short hair �...

Not that old but cheese in the trap I think that’s the name smart female lead and kinda creepy ml but they end up together

this one kinda fits! - http://www.mangago.me/read-manga/beauty_pop/

hi! try these:
http://www.mangago.me/home/mangalist/835152/
http://www.mangago.me/read-manga/say_i_love_you/
http://www.mangago.me/read-manga/gakuen_alice/
http://www.mangago.me/read-manga/sabaku_no_harem/
^It's not super old
http://www.mangago.me/read-manga/reimei_no_arcana/
http://www.mangago.me/read-manga/bloody_mary_samamiya_akaza/
http://www.mangago.me/read-manga/oresama_teacher/
http://www.mangago.me/read-manga/skip_beat/
http://www.mangago.me/read-manga/strobe_edge/
http://www.mangago.me/read-manga/akuma_to_love_song/
http://www.mangago.me/read-manga/akagami_no_shirayukihime/
http://www.mangago.me/read-manga/ouran_high_school_host_club/
http://www.mangago.me/read-manga/mahou_tsukai_no_yome/
http://www.mangago.me/read-manga/usotsuki_ouji_to_nisemono_kanojo/
http://www.mangago.me/read-manga/takane_to_hana/

Thanks for all the recommendations!