![](https://pic1.mangapicgallery.com/r/avatar/50/u526882_50x50.jpg?2)
Both guys were 'straight' but turned gay. Different tone... one's contemplative, the other's comedic.
http://www.mangago.zone/read-manga/shinyuu_tte_soko_made_shinakucha_ikenai_no/
http://www.mangago.zone/read-manga/reply/
![](https://pic1.mangapicgallery.com/r/avatar/1e/u521402_50x50.jpg?2)
A few of my favourite straight x gay couples:
http://www.mangago.zone/read-manga/yoidore_koi_o_sezu/
http://www.mangago.zone/read-manga/therapy_game/
http://www.mangago.zone/read-manga/sorenari_ni_shinken_nandesu/
http://www.mangago.zone/read-manga/kitto_oujisama_ga_nante/
http://www.mangago.zone/read-manga/doushitemo_furetakunai/
(Prequel) http://www.mangago.zone/read-manga/kyuuso_ha_cheese_no_yume_omiru/ (Sequel) http://www.mangago.zone/read-manga/sojou_no_koi_wa_nido_haneru/
Also highly recommend the first manga mentioned in 1st comment :)
Is there any yaoi where the main guy starts out thinking he is straight but turns gay fer the course of the story?