I would have love this story way more if the they won't decide out from the start that if someone is gay, he will hit on the main guy from their first meeting or the opposite, that teacher just decided just cause his boyfriend like girls he will dump him. what stupid! cause he's not Straight if he can have sex with the main guy, that just not how it work, he's Bi! and just cause he liked girls before, don't mean he can't love him now! I do not know if this is a problem in translation or it in the manga itself. but it still annoying.
Keijijou na Bokura