Need to find this yaoi manga!

storyline:

Two boys in high school, one of them was a chubby dude - was made fun of and got his glasses stepped on which made him stay at home everyday. He moved away with depression. He woke up one day and found out he got skinnier after a while of being cooped up in his bedroom everyday.

The other dude, cool-looking guy, popular. He's the one who had stepped on the glasses of the chubby dude. He also felt bad and wanted to pay back the glasses he broke, so he went to the chubby dude's house to pay back the glasses. When he got there, he found out that the chubby dude moved away and always had guilty feeling over never paying back the glasses.

Overall, the glasses dude "tricked" the other dude into having sex with him... for "revenge" for bullying him in high school LOL.

Anyways! If anyone knows, please let me know! :^)