The 27-year-old is shown watching an episode from a recent viewing party in Melbourne, on his friend Jackson Brown's Instagram story.
The fireproofer is visibly uncomfortable as he gets his airtime with Angie, suggesting that he has ill feelings towards her, and the show.
"Turn it off, I don't want to see that sh*t," Timm says in the video, turning his face away from the screen as he and Angie get close.
Covering his eyes with embarrassment, his friend Jackson, who tried to sabotage Timm's home town visit, continues to film him.
"He is a party boy, and Timm is known as a party boy," Jackson told Angie during the hometown visit. "I'm not trying to stitch the bloke up, but I don't want you to waste your time. . . he's a hard horse to tame, I'll tell you right now," he concluded.
However, when Angie confronted Timm about his best friends comments, he assured her that he'd change his ways for her.
During last night's final dates episode, it was clear that Timm had fallen for Angie, a far cry from his attitude watching the show back with friends.
Jackson continued to film Timm during their viewing party, mocking Timm to the point of him flipping him the bird in a video.
Does this mean that Carlin Sterritt wins Angie's heart on tonight's finale? Sportsbet has tipped the Carlin to win with short odds of $1.25. Timm has odds of $3.75.
Ahead of the finale, Timm revealed: "Coming into this experience I never thought I would be standing here at the end, but here I am and I couldn't be happier.
"I came looking for a partner in crime to laugh, adventure and do life with and Angie honestly ticks all the boxes. I just hope she can take a gamble on me."
The Bachelorette finale airs Thursday at 7:30pm on Channel 10