Dylan O'Brien has given further insight into his friendship with his Teen Wolf co-star Tyler Posey.

The 34-year-old star opened up about their friendship while in chat with Hit Radio on February 3, while promoting his upcoming film Twinless.

When the host questioned the Send Help actor, "Who in this industry has been a rock to you?" Dylan didn’t hesitate to take Tyler’s, 34, name.

"My first cast mate friend that I ever had was Tyler Posey from a show called Teen Wolf and he will forever be like family to me," he shared.

"I was literally just with him last week," he admitted.

The Maze Runner actor also went on to credit Thomas Brodie-Sangster, who also co starred with him in the YA Dystopian Science fiction film series, saying, "Thomas, my buddy, was at Send Help (premiere) with me last night."

Dylan further proceeded to give a shout out to Rachel McAddams, his co-star from their movie Send Help.

"We just met this past year, but she’s just such a wonderful person and I learned so much from just watching how she moves through the world. Especially balancing this type of career which isn’t always the easiest," he shared.

"I really look up to her," he admitted.

"Teen Wolf was one of the few things MTV got right in their "not doing music" era," a fan penned in the comments.

"I knew he was going to say tyler and still started crying the moment he said it," another wrote.

For the unversed, Twinless is set to release on February 6 and Send Help hit the theaters on January 30.