Hi, dear yaoi fans!!! I take a wonderful yaoi manga as a gift!!! It is named Abiru Junjou by OUGI Yuzuha.
First-year high school student Yuka happens to see his amazingly handsome neighbor kissing another man. However, he learns that the handsome neighbor is his math teacher. Having fallen in love at first sight, Yuka struggles to attract Gotou's attention, but Gotou restrains him with an, "I have no interest in kids."
This is a good one. The main character Yuka has somewhat of a sad life, but he's loved by his Grandmother, so he's happy for the most part--- that gave the manga a sombre tone yet it was beautifully illustrated and expressed. The plot is very subtle but that subtlety is ver well orchestrated. I enjoyed the dark outlook the mangaka presented, and how these two characters struggled and ultimately teach (no pun intended) each other what the other lack. I was distress over the age though, it still strikes me as a sketchy and touchy subject. Yuka shouldn't of been casted as a 15 year old, I wish he was 18 instead but I guess that would've been boring and the mangaka probably wanted that way - to shock and interest readers. But Gotou sensei was NOT presented as some type of creepy child molester so that was okay I guessed. And I also love the line "draw with love." It's not the typical yaoi! You actually witness them gradually loving the other (which never felt force) and you witness their journey of finding love and happiness and family, which made it all the more beautiful.

The link:
http://emanga1.isoshu.com/bookinfo/26968/?recommid=2006