Paris Hilton opened up to Piers Morgan about the now infamous sex tape featuring the heiress and her then-boyfriend: “It’s something that changed my life forever.”

On Tuesday’s “Piers Morgan Tonight,” Hilton said she felt “betrayed” by ex-boyfriend and tape co-star Rick Salomon, who distributed the intimate video in 2004 after it leaked onto the Internet in 2003.

“Now when people look at me they think that I’m something I'm not just because of one incident one night with someone who I was in love with,” Hilton said, as her mom, Kathy, began to cry. “It’s hard because I’ll have to live with that for the rest of my life and explain it to my children. ... I’ll never be able to erase it.”

Hilton’s candid interview comes just one day before the premiere of her new Oxygen reality show, “The World According to Paris.”