The four individuals each wrote about the fun gathering, which also included Blake Horstmann, on Instagram.
"And to think just over a year ago none of us knew each other..." Jason, 30, captioned a photo in which Kaitlyn and Cassie each had her legs wrapped around her man's waist with Blake laughing in the background.
Kaitlyn, 33, shared a photo of Cassie and herself, writing, "Why is, 'I'd jump a fence for her too,' the only caption coming to me."
Kaitlyn was clearly referring to how Colton jumped a six-foot tall fence and attempted to quit The Bachelor after Cassie dumped him and threatened to leave the show. (Colton later convinced Cassie to stay and continue dating him).
"We get it," Kaitlyn continued. "Colton jumped a fenceā¦. But in all seriousness I would. She's the sweetest."
As for Cassie, the 23-year-old assistant speech pathologist posted a group photo on Instagram and wrote alongside it, "Love this group of people... can we do this all over again?"
And finally, Colton, 27, captioned a photo with his boys, "What a weekend," followed by a group shot of them supporting his Legacy Foundation at a charity event for children with cystic fibrosis.