The boy was bullied for being gay the person he confessed to. He transferred to another school. He said he wouldn't fall in love again till this guy came. When out and about they meet the person he confessed to and it turns he really did like him and that he was scared of what every else would think and told the guy to take care of him.
Is it this...?
http://www.mangago.zone/read-manga/junjou_escape/
Read it on mrm, I believe it only has one chapter. In the chapter the uke is disabled and twords the end of the chapter he is signing a paper for self euthanasia.