I cant stop thinking that He Tian didnt like when Redhead admitted he was disgusted bout the kiss...
No one would like if someone called your kiss disgusting...
Also, even if Red is usually rude with people, he doesn't seem to be homophobic... so I think he doesn't really believe He Tian is disgusting, he said that to hurt him so he would understand the message "get away from me"
¿de qué historia proviene este spin off?):
http://www.mangago.zone/read-manga/mods/