Actually, this whole thing is a trap. Although their onstage performance is seamless, their chemistry palpable, just like the movie trailer showcases.
But just backstage, the tension between the two was quite obvious. From the behind-the-scenes footage captured before, the two of them hardly interacted at all—Bo Yan and Shang Feifei seemed to chat more and were noticeably closer.
Besides, Xia Siyu has expressed multiple times on different occasions that she would prefer not to work with Bo Yan. Though they've collaborated a few times since then, it's clear it's strictly professional—there's almost zero personal connection.
And it makes sense. Their romance was so under-the-radar that even their management companies only found out much later. Shang Feifei and Wang Zisu had figured it out, but even they didn't openly acknowledge it, let alone the rest of the entertainment industry, where not even rumors circulated.