But not everyone is so willing to forgive and forget.
Talk show host Montel Williams took to Twitter when he heard the news to vent his frustration and disgust with the reality star.
Taking things slow, the hot couple celebrated the holiday weekend together, and were seen eating pork tacos at Toronto's Black Hoof restaurant.
[They are] quietly seeing each other again. They have been talking the whole time and decided to give it another shot. Jessica really wanted to get back together with him and Justin realized single life is not what it's cracked up to be.
Good for them! Nobody was happy to see their four year relationship end.
[Image via Flashpoint/WENN.]