tvN O'PENing: Shared Office Hookup (2022)

Vibes are less rom-comy but has some similar sexual tension and developing deeper romance.
There are multiple couples/ storylines in The Jungle and one does take place in an office setting.

Different setting: university vs. office
Both involve a love triangle
Mature 19+ scenes; one night-stand
Focus on multiple couples

Watch for the romance similarites
Similarities:
Office romance, Cold aloof male, Sexual tension
Differences:
Different jobs, because the tvn show is a short it is much more romance focused where as Behind every star is more plot focused
Watch the TvN show if you liked the relationship between the manager and the tax guy.