The two men star together in the new movie 'Geostorm'.
"There’s nobody quite like Robert Sheehan. He’s so charismatic and he’s the best actor that I’ve worked with in a long time," Butler told RTÉ Entertainment.

Last night at the #Geostorm premiere. Awesome to see everyone again. pic.twitter.com/Ndc19Hm8Yt

— Gerard Butler (@GerardButler) October 17, 2017

Butler heaped even more praise on the 'Love/Hate' star. "Our director Dean [Devlin] fell in love with him and just put him as the lead in his next movie," he said.
"I was at the premiere of the movie the other night and I turned to my manager during the film and said ‘he’s so good!’.
"He’s just so in the moment and interesting and whenever he acts it doesn’t feel like he’s acting."
"He just as a way of keeping it very natural but entertaining and quirky at the same time," Butler added.