anyone knows a yaoi manga with reversible couples? (╯°Д °)╯╧╧ ╧╧ ╧╧ ╧...

Try nanu-nana's list. http://www.mangago.me/home/mangalist/29523/

I think Kathy or Sakuracracy has a seke couple list.

thank you (๑•ㅂ•)و✧

http://www.mangago.me/read-manga/shinjuku_lucky_hole/
http://www.mangago.me/read-manga/kyuuso_ha_cheese_no_yume_omiru/ and its sequel http://www.mangago.me/read-manga/sojou_no_koi_wa_nido_haneru/
http://www.mangago.me/read-manga/hatsukoi_no_atosaki/

Also, not sure if this is any good to you, but the couple in Itoshi no Nekokke DOES become reversible - it just hasn't been translated yet. :( http://www.mangago.me/read-manga/itoshi_no_nekokke/

uwaaa, thank you very much ლ(´ڡ`ლ)