The uke need to experience all type of relationship before he decide what his preference. It's look like he being forced to do it. Just like he only experience one type of relationship and decide that what he wanted to do.
It never said. It only said that his main reason for not dating was that he wanted to focus on his career. Honestly, I don’t think even YiYun knows, because I don’t think he ever had a crush or ever had any interest in dating to begin with. This is probably a new area for him.
Can I know author's twitter account? Or the author only use weibo