Typical trope would be:
Manbagi confess> Tadano rejects> Manbagi finds new love interest = become a couple. Moved on so she shares tadano love story with Komi.
Komi wants to confess> Tadano rival appears> Komi is overwhelmed so she can’t confess> Tadano is jealous, gains courage and confess.
But I’d still watch if they turn this into anime lol