He jumped into the acting world and soon Directioners will be able to see him on the big screen in the war movie, .
He even kept his suit on for the occasion, as he made sure to support the woman behind his forever incredible and previously less managable locks.
Dougie Poynter was also there, looking every bit the brother of Harry Styles.
"They're having big hearts-to-hearts all the time." The "Best Song Ever" hitmaker has supposedly grown even closer to Teasdale ever since her breakup.
"Lou's devastated, and her priority is [daughter] Lux, but she's grateful to have Harry in her life -- he's good at cheering her up," the source added.
Although Styles seems much happier to spend time with his hair stylist and play with her baby than to hang out with his bandmates while away on tour, perhaps he is just trying to be a supportive friend to Teasdale, and there is nothing more to it.
Meanwhile, Harry Styles' former girlfriend Taylor Swift is reportedly dating Zach Braff, who has been friends with the One Direction member for a long time now.
According to a source, Teasdale has recently split from her long-term boyfriend and baby's father Tom Atkin, despite him declaring his love for her on Instagram back in March.
"There's a chance Lou and Tom [Atkin, who she reportedly split with] will sort things out, but Harry's supporting Lou for now," the source said.
“As soon as Harry met Tess there was an instant spark between them," a source close to the couple tells The Sun.