Kristin Cavallari sent best friend Justin Anderson heaps of love after his emotional adoption story made headlines.The 40-year-old Very Cavallari alum recently opened up about putting his son up for adoption more than 20 years ago — and defended himself against trolls with a lengthy message on social media.“To the people from private accounts saying negative things — go kick rocks on the freeway, you’re not welcome here,” Anderson wrote on Wednesday, December 16.