Are Bobo and Fang lovers in reality?

In "Heart-pounding 20 Years Old", when Ahou is riding a roller coaster, # Ahou grabs Dong's hand and tells Dong that when they are alone, he looks like his ex-boyfriend. I wonder if Hui Hui got it! However, after Dong patted Zhang Haoxin's head that day, he felt that the emotional line between and gradually became clear.