Joe Mazzello made a career out of playing lonely, abused, oddball, or outcast boys, or the boy who bonds with them.
In 1992, at the age of eight, he won critical acclaim in Radio Flier, about a boy (Elijah Wood) who discovers that his stepfather is abusing his younger brother (Joe), and develops an imaginative escape plan: they'll transform his toy wagon, a Radio Flier, into an airplane.
In The Cure (1995), jock Erik (Brad Renfro) befriends Dexter (Joe), who has AIDS. His mother forbids the friendship, and the bigots at school call them homophobic names, but their bond transcends all obstacles. When they discover that a doctor in New Orleans has discovered a cure, they raft down the Mississippi like Huck and Jim.
In 2010, he starred in The Social Network as Dustin Moskovitz, who helped Mark Zuckerberg start the Facebook social network site.
No word on whether he's gay or a gay ally.