Barry and Iris go to a park near where Joe is being held and Iris admits her feelings in episode 1x15 “Out of Time”. Barry talks to the Speed Force in the guise of Iris in episode 2x21 “The Runaway Dinosaur”.
Appears in 2 additional episodes.
Dead or Alive
Barry and H.R. attempt to ambush the collector in the park and Cisco returns later to fight her in a trial by combat.
The Icicle Cometh
Sherloque orchestrates a scene on the waterfront that forces Nora and Iris to solve the mystery together.