Colin and Penelope officially get together romantically in Bridgerton season 3, when Colin finally realizes he’s in love with her and proposes, leading to their engagement and then marriage.

On the Netflix show

  • Seasons 1–2: Penelope is secretly in love with Colin, but he only sees her as a friend and even says he’d never court her, which breaks her heart.
  • Season 3 Part 1: Colin returns from his travels a newfound rake, and Penelope decides she needs a husband who’ll let her continue her Lady Whistledown life. Their dynamic shifts when he helps her gain confidence and then starts to see her differently.
  • Mid–Season 3: The “carriage scene” is the turning point where Colin realizes his romantic feelings; soon after, he proposes and they become engaged.
  • Later in Season 3: They marry, but her secret identity as Lady Whistledown causes major tension until she finally reveals herself and they reconcile as a couple.

Quick forum-style scoop

In fan and forum discussions, people usually say Colin and Penelope “really get together” in season 3, once Colin moves from oblivious best friend to fully in love fiancé and husband, with the carriage proposal and post- engagement episodes marking the true start of their romantic relationship.

TL;DR: They don’t become an actual couple until Bridgerton season 3, when Colin falls for Penelope, proposes, and they eventually marry after working through the Lady Whistledown drama.

Information gathered from public forums or data available on the internet and portrayed here.