I only remember a scene from the novel and I think it happens near the second half of the novel. I think it should be a entertainment BL and Chinese. The MC posts something (like wanting to buy a ticket to the ML's show (?)) on his official account instead of his second account (?), which leads to his fans and ml's fans to find out that he was/is the ml's fan - some of his comments are like "[ML's name] is the best" and defending the ML's name (?).
After Transmigrating I Made The Antagonist Cry maybe? Although it been a while since I read it so I am not sure if excatly such scene happened.
Is it Falling in love with the male god? https://www.novelupdates.com/series/falling-in-love-with-the-male-god/