can someone give me a BL where to high school boys fall in love with each other but at 1st...

Hi! Try these:
http://www.mangago.zone/read-manga/seven_days/
http://www.mangago.zone/read-manga/mikami_to_sato_wa_mada_yamashikunai/
http://www.mangago.zone/read-manga/kimi_wa_natsu_no_naka/
http://www.mangago.zone/read-manga/i_seriously_can_t_believe_you/
http://www.mangago.zone/read-manga/yamete_kudasai_mabushii_desu/
http://www.mangago.zone/read-manga/urusai_kurai_no_kokuhaku_kudasai/
http://www.mangago.zone/read-manga/golden_sparkle/
http://www.mangago.zone/read-manga/eyes_speak_more_love_than_the_mouth/
http://www.mangago.zone/read-manga/harenochi_shikibu/
http://www.mangago.zone/read-manga/kiyona_yubisaki_bukiyona_tsumasaki/
http://www.mangago.zone/read-manga/tadatada_suki_to_iu_dake_de/
http://www.mangago.zone/read-manga/hidamari_no_orange/
http://www.mangago.zone/read-manga/slow_starter_ichikawa_kei/
http://www.mangago.zone/read-manga/konosaki_wa_futarikiride/
http://www.mangago.zone/read-manga/kisses_x_kiss_x_kisses/

If you liked these then consider checking my lists out:
http://www.mangago.zone/home/mangalist/853996/
http://www.mangago.zone/home/mangalist/932570/
Enjoy!

http://www.mangago.zone/read-manga/sono_suki_honto/
http://www.mangago.zone/read-manga/konosaki_wa_futarikiride/
http://www.mangago.zone/read-manga/bluer_than_summer/
http://www.mangago.zone/read-manga/cupid_ni_rakurai/

wanna know too