I only remember that my first was Koisuru Boukun and I read the manga just after that xD Later I watched every BL I could find. There's a list of them if you want to take a look http://www.gaiaonline.com/guilds/viewtopic.php?t=21253591 The most memorable to me were Boku no Sexual Harassment (dat corn xD) and Sensitive Pornograph. Also Kachou no Koi which I watched with my cousin, bc it's hilarious ^^
So I saw this 2 or maybe 3 part OVA of a manga where the story goes like this boy (around 15?16? Can't remember) is in a relationship with his dad who is a famous actor. So by the end of the OVA it's revealed that the actor dude is not actually his father but his uncle and the boy is his sister's son.
I have been trying so hard to remember the name of this manga for the past few weeks,pls help me find it(TДT)