Coach Bolton is on Blake Lively’s side.

The actress’ brother-in-law Bart Johnson, who played Zac Efron’s dad in “High School Musical,” replied to a negative Instagram comment about the drama surrounding Lively’s latest movie, “It Ends With Us.”

The exchange began when a social media user claimed the film, adapted from Colleen Hoover’s book of the same name, promoted “happiness in a domestic violence setting without any regard for any victims.”

Lively, notably, has been slammed for telling fans to “grab [their] florals” and friends when heading to the theater, as well as selling her Blake Brown Beauty haircare and Betty Buzz alcohol while doing press.

On Wednesday, Johnson responded, “I’m really sorry you feel that way. I’m sure you have a huge heart and want the best.

“I can promise you the truth has not come out yet,” the actor, 53, continued. “Blake worked harder on this film than anything I’ve seen her do in my entire life. Because it meant so much to her.”

Robyn Lively’s husband went on to write that people should focus on the “message is in the book … and in the movie” as opposed to “short clips [and] interviews.”

He noted, “She is the reason the message/this movie/is getting out.”

However, he acknowledged, “Were mistakes made? Yes. I make mistakes in life. But they aren’t under a microscope. Anyway, I respect your views. I got nothing but love for you.”