Not all of the couples on The Rookie are good matches. Fans weren’t too fond of John Nolan (Nathan Fillion) and Lucy Chen (Melissa O’Neil) during their brief romance in Season 1. Wesley Evers (Shawn Ashmore) was engaged to recently villainous Monica Stevens (Bridget Regan). Bailey Nune (Jenna Dewan) was once married to the abusive Jason Wyler (played by Dewan’s fiancé, Steve Kazee).

But the couples below are — or at least once were — absolutely swoon-worthy. Of the dozens of relationships from the ABC police series, let's rank the top 10.

The Rookie, Season 6 Finale, Tuesday, May 21, 9/8 p.m., ABC

Jackson West (Titus Makin Jr.) clearly had chemistry with Isaac Young (Joshua Triplett), the agent he met on Season 3's "Revelations." After working on a case together, they couldn't say "neigh" before having dinner together. Unfortunately, Jackson passed away before their relationship could really take off.