Water Under the Bridge (2003)

As a youngster, Jake O'Connor witnessed the sight of his best friend lying dead and his father wielding a shotgun. Trying to gain closure, Jake returns home to find the truth about what really happened that fateful night. Incognito, he moves into an apartment owned by a sexy woman named Catherine. As Catherine and Jake fall for each other, the pieces of the puzzle begin to come together.

Unfortunately the movie Water Under the Bridge is not yet available on HBO Max.