Kamber, a former girlfriend of Kim Kardashian's ex-husband Kris Humphries, announced the end of her engagement in a joint statement with Canadian Football League slotback Smith, on her Facebook page.
"Although we love each other intensely, we both want different things out of life," they said of their decision to go their separate ways.
The season 1 couple, who had been together for two years and were set to wed this June, said despite the reality-show pairing, their relationship was "more than just a television show to us, it was real life, and real love."
And even though things didn't work out, the couple say "we wouldn't change a single thing about our experience," adding, "We will always remain an important part of each other's lives."
Kamber later Tweeted her appreciation to friends and fans at a difficult time. "I'm so overwhelmed by all your kind words, positive energy, and support! It really means the world!"