The "Strip That Down" singer has been feeling under the weather recently, and took to YouTube earlier this week, May 31 to give his fans an update, joking his husky voice sounds just like Harry's.
"I feel like this becomes, like, a Harry Styles constant impression!" he said at the time. "Maybe I've took his voice on for something [sic]. But it's also been a very weird and very poorly few weeks - a lot of coughing - I feel for anyone who's ill right now."
And now Liam has revealed his One Direction pal got in touch with him after the video was published to make sure he was OK.
When asked in an Instagram Live Q&A if he was in touch with Harry, Liam said, "Yeah, I did speak to Harry, and it was really lovely. He called me because he has a sixth sense for if I'm struggling or if one of us is in trouble, I feel like."
"I spoke to him and it was a really lovely catch up actually. And I've got a lot of love for the man. He's great, he's really, really great."
During his Instagram Live, Liam also revealed he'd love for all the One Direction bandmates to "get in a room" together in the future with a possible reunion on the cards.
"It's hard in this position sometimes. You're watching people's stories from afar that you used to know so well," he said. "That can be difficult when you feel like a piece of you is missing with them at that point, I guess. And I think we've all felt this at different times, me and the boys."
"It's almost like missing a very dear friend a lot of the time, but everyone's so busy and you've got to be understanding of all that. I'd love for us to get in a room at some point. I think it would be the best thing. We've all said it outside but we've just not said it to each other. There's a song in there somewhere. Somebody write that down!"