What happens to Biff and Willy’s relationship after Biff goes to the hotel?

Willy has built himself up to be the ideal father for Biff. He was his idol. Biff looked up to Willy doing everything he said. To Biff, Willy was almost a god among men. He could sway anyone with his friendliness and unique charisma. When Biff walks into his hotel room and finds Willy's mistress in the bathroom, his view of his father changed. Everything he once thought of his father- his greatness- went down the gutter. Everything that Willy built himself up to be was destroyed in a matter of seconds. Biff and Willy's relationship changed permanently that day. This was the reason for the present events- the reason why Biff is the way he is and why Willy is the way he is. It was all because Biff saw Willy for who he really was that day, a liar. From then on, Biff never saw his father as any idol of his.