Shoujo Manga?

http://www.mangago.zone/recommend-manga/sugars_yamamori_mika/
I've been reading this one, only 3/4 done. Most of them are one shots, but sometimes we get a little continuation of some stories. Lots of stories though of many different characters! And most intertwine with each other

http://www.mangago.zone/read-manga/haruyuki_bus/
http://www.mangago.zone/read-manga/hidarite_no_love_letter/

http://www.mangago.zone/read-manga/kono_koi_wo_wasurenai/ my fav is ch.3
http://www.mangago.zone/read-manga/iinazuke_ryokan/
http://www.mangago.zone/read-manga/playground_love/
http://www.mangago.zone/read-manga/netsu_ai_shisen/
http://www.mangago.zone/read-manga/koibana/ especially ch.2+3
http://www.mangago.zone/read-manga/akuma_na_cupid/
http://www.mangago.zone/read-manga/koi_ni_naru_made/
http://www.mangago.zone/read-manga/shounen_butterfly/
http://www.mangago.zone/read-manga/ikenai_candy_love/
http://www.mangago.zone/read-manga/ouji_romantica/