A possessive top x a single-minded bottom
Lin Jin had no idea what was wrong with him. Whenever he saw Wen Yan getting close to someone else, chatting and talking with them, he felt terribly unhappy and wished those people would stay away from Wen Yan. Only later did he realize that it was jealousy, and that he had fallen for Wen Yan long ago.
Lin Jin: Only the person I like can see this post.
Wen Yan: You idiot, you forgot to block me.
Lin Jin: ...
Theme: Youth.