???

Please help me find this yaoi that I read a long time ago. .. the uke is older than the seme, he's in love with the seme for a long time, they are neighbours I think. But since he is younger, the uke choose to have sex with his class mate and the seme accidentally saw him naked covered in cum. After so many years, they meet again, the uke is now a teacher and the seme is his student... Please help me. Thanks a lot. ..