9-1-1 actor Oliver Stark has admitted things may not be all that rosy between Evan 'Buck' Buckley and Taylor Kelly when the show returns for its spring premiere.

We've added screenshots from Episode 10, "Wrapped in Red," of Season 5 of 9-1-1.

We've added screenshots from Episode 9, "Past Is Prologue," of Season 5 of 9-1-1.

We've added screenshots from Episode 8, "Defend in Place," of Season 5 of 9-1-1.

We've added screenshots from Episode 7, "Ghost Stories," of Season 5 of 9-1-1.

We've added screenshots from Episode 6, "Brawl in Cell Block 9-1-1," of Season 5 of 9-1-1.

Oliver Stark and Sarah Shahi have joined forces to raise money for an incredible charity that aims to support and empower individuals and communities affected by breast cancer.

We've added screenshots from Episode 5, "Peer Pressure," of Season 5 of 9-1-1.

We've added screenshots from Episode 4, "Home and Away," of Season 5 of 9-1-1.

We've added screenshots from Episode 3, "Desperate Measures," of Season 5 of 9-1-1.

We've added screenshots from Episode 2, "Desperate Times," of Season 5 of 9-1-1.

We've added screenshots from Episode 1, "Panic," of Season 5 of 9-1-1.

It’s easy to see that Stark has fallen into a solid rhythm of embodying his character after playing Buck since the 2018 pilot. From his experience of playing the role of Ryder in the AMC drama Into the Badlands, Stark found the two characters’ internal struggles to be similar, particular…

Oliver Stark at The FOXTV Fan Hub 2021.

Oliver Stark attends the 2021 iHeartRadio Music Awards held at the Dolby Theatre in Los Angeles on May 27, 2021.

How did it feel watching the finale?

We've added screenshots from Episode 14, "Survivors," of Season 4 of 9-1-1.

Fox's most successful franchise is going strong: "9-1-1" and its spinoff "9-1-1: Lone Star" will be back for seasons five and three respectively

We've added screenshots from Episode 13, "Suspicion," of Season 4 of 9-1-1.

We've added screenshots from Episode 12, "Treasure Hunt," of Season 4 of 9-1-1.

We've added screenshots from Episode 11, "First Responders," of Season 4 of 9-1-1.

We've added screenshots from Episode 10, "Parenthood," of Season 4 of 9-1-1.

We've added screenshots from Episode 9, "Blindsided," of Season 4 of 9-1-1.

We've added screenshots from Episode 8, "Breaking Point," of Season 4 of 9-1-1.

Oliver Stark gave ET an exclusive behind-the-scenes look on set of season 4.

We've added screenshots from Episode 7, "There Goes the Neighborhood," of Season 4 of 9-1-1.

Oliver Stark takes us through some of the most iconic scenes from the show and it got emotional!

We've added screenshots from Episode 6, "Jinx," of Season 4 of 9-1-1.

The British-born Stark, 29 — also also known for “Into The Badlands” and “Luther” — answered some questions for The Post.

Oliver Stark interview for ScreenWeek TV.

Oliver Stark talks with eCartelera about 9-1-1.

Oliver Stark chats with Cinefilos about 9-1-1.

We've added screenshots from Episode 5, "Buck Begins," of Season 4 of 9-1-1.

What is this element that sets the series apart?

This week, 9-1-1 gave Evan "Buck" Buckley (Oliver Stark) his very own backstory episode

To mark the arrival of our lord and saviour – Disney+'s Star – Stark talked us through how he's coped with staying both healthy and sane over the last year.

Oliver Stark is interviewed for season four of 9-1-1, which is coming to Star, the new channel geared towards adults on Disney+.

Between the family scenes and the fire, was this your most physically and emotionally strenuous episode?

PEOPLE spoke to Stark, 29, to take us through some of those twists and turns

Oliver Stark on the Buck Begins episode on Fox 9-1-1.

EW: How excited were you when you found out they were going to do a Buck backstory episode?

Oliver Stark discussed the emotional fourth season "Buck Begins" episode in an exclusive interview with The Knockturnal.

Throughout the first four seasons of 9-1-1, Oliver Stark’s Evan Buckley — a.k.a. Buck

We've added screenshots from Episode 4, "9-1-1, What's Your Grievance?," of Season 4 of 9-1-1.

We've added screenshots from Episode 3, "Future Tense," of Season 4 of 9-1-1.

Getting in touch with his feelings. During the Monday, January 25, episode of 9-1-1, it was revealed that Oliver Stark‘s

TMI with Oliver Stark and Rafael Silva.

We've added screenshots from Episode 2, "Alone Together," of Season 4 of 9-1-1.

We've added screenshots from Episode 1, "The New Abnormal," of Season 4 of 9-1-1.