Jon Gosselin is one proud father in the wake of his son Collin Gosselin’s debut tell-all memoir. “First and foremost, I couldn’t be more proud of my son’s heartbreaking memoir and his mission to help other victims of abuse,” Jon, 49, exclusively told Us in a statement on Thursday, October 15, referring to Collin’s claims in his book, In the Shadow of Eight: Surviving the Reality of My Childhood, that he was abused by mom Kate Gosselin as a child. Jon — who rose to fame while starring on TLC’s Jon & Kate Plus 8 alongside his now-ex wife, Kate, 51, their twin daughters an...