Liam captioned the post: "Sorry I couldn’t make it to the @isntitromantic premier tonight guys. Been dealing with some pretty annoying health stuff the last couple days."
Unfortunately for both Liam and Rebel, early reviews for their romantic comedy flick have been less than kind.
US Magazine released a brutal review, writing that the film quickly becomes 'tiresome and cheap' and gave the spoof rom-com a lowly 2.5 stars out of five.
It's not the kind of news that Liam will be loving at this difficult time.
Despite the negative reviews, we're probably still going to check this comedy out!