The former football player-turned-aspiring model showed he liked what he saw on Jessika's Instagram account this week, by commenting on five consecutive posts.
Alongside the first, a boomerang clip, Charlie wrote, "So amazing."
The next featured Jess and two friends, to which Charlie wrote "Thanks" accompanied by a prayer emoji.
Jessika got another "Amazing" for a photo of herself getting out of a car and then a "Killer vibes" with a smiley face for a racy snap with a girlfriend.
And finally, Charlie let her know he was a regular at Icebergs in Sydney's Bondi, where she captured her final post.
He wrote, "One of my fav spots," followed by a smiley face, which Jess kindly "liked."
Could these two be a match made in reality TV heaven?