Eagle-eyed fans noticed the couple had quietly added each other's names to their respective Instagram biographies, and they have also re-followed each other's Instagram pages.
As well as unfollowing each other last week, they had also removed all loved-up photos from their social media accounts.
While the photos are yet to reappear, their names in their Instagram bios are sure signs they are serious this time around.
During their time apart, the reality TV star showed her ex exactly what he was missing by flaunting her body in a revealing social media post.
Taking to Instagram on October 14, the 27-year-old mum-of-one posted a post-gym selfie, in a tight red gym bra and her trademark pout.
She captioned the after-workout shot: "Life is about as blurry as this photo."
"Side note, haven’t worked out that hard in about a year so go me," she added.
The post has since been removed by Susie.
Over the past eight months, Todd has become a committed stepfather to Susie's four-year-old daughter, Baby, from a previous relationship.
"She has her own father, but when Baby's in my care, I treat her as if she's my own," Todd said to New Idea in September.
The NRL star even recently admitted he's ready to start a family: "If Susie and I are ready to commit to it, I'd definitely love to have kids."
Todd and Susie reportedly first met in January, after Todd "slid into Susie's DMs" on Instagram following weeks of liking each other's photos.
Susie, who was partnered with barista Billy Vincent on Married At First Sight, went 'Instagram official' with Todd in March.