The 18-year-old reached out to The Goonies star following a "weird" performance of his new song Go 4 It on U.S. breakfast show Today earlier this month (Sep16).
The clip became a hot topic online last weekend (17-18Sep16), with many poking fun at the former child actor and ridiculing his strange performance on social media.
After the online furor, Corey revealed the negative and cruel comments left him hurt and saddened, and he openly sobbed in a now-deleted Facebook Live post.
Following the performance, Paris reached out to Corey to show her support, writing, "@Corey_Feldman anything you do that makes u happy, people are going to hate on it.. but if you're happy then it doesn't matter. hope ur well."
Corey has since responded, addressing her own social media posts about her online bullying torment, writing, "@ParisJackson U don't deserve ANY of (the bullying)! I hope 1 day we can talk, as Id LOVE 2 tell U + things about your father when he was a young man."
Jackson is not the only one to share a supportive message with Corey - his Stand By Me costar Jerry O' Connell and Kesha have also defended him.
Paris has dealt with bullying online and earlier this month (Sep16) she explained she attempted suicide when she was younger because the abuse she received online became too much in an emotional video rant on Instagram.
In 2013, Paris spent time in a hospital and a residential treatment centre after an apparent suicide attempt, and she revealed she tried to take her own life because the hatred she received online got too much to handle. She also emotionally admitted nothing has changed and she is still getting "harassed" on a daily basis. The post was subsequently deleted.
Corey had a friendship with her father when he was a teenager.