Nobody is tighter in Hollywood than Ben Affleck and Matt Damon! From meeting as two kids growing up in Boston to winning an Oscar together for Good Will Hunting in 1998, the two stars have remained thick as thieves. “My own kind of sanity and mental health really benefited from having someone who I grew up with and knew as a child who was also going through something similar — this 20-year-plus journey of being in the public eye — who I could reflect on it with honestly, talk things over with, be myself with, who I knew why we were friends, why he was interested and loved me, why I loved him,”…