Entertainment Tonight.

In a revealing interview with Diane Sawyer, an emotional Rihanna, 21, recalls the abuse she endured while dating singer Chris Brown and why, following that terrifying night before the Grammy Awards, she went back to him.

In her first sit-down interview since her highly publicized domestic dispute with Brown, Rihanna tells Sawyer she was embarrassed that she "fell in love with that person...so unconditional that I went back."

"You start lying to yourself the minute the physical wounds go away," she says on Thursdays "Good Morning America."

"That's a memory you don't want to have ever again."

Tears welling up, the pop singer continues, "When I realized that my selfish decision for love could result into some young girl getting killed, I could not be easy with that part. ... I couldn't be held responsible for telling them to go back."

The pop star had this message, "Don't react off of love. ... Love is so blind."

Rihanna's sit down with Sawyer continues on "GMA" on Friday, Nov. 6 at 7 a.m. ET -- and then on Nov. 6 at 10 p.m. ET on "20/20."

Following the domestic violence incident, Brown was sentenced to five years of probation, community labor and one year of domestic violence counseling.

Related stories on ETonline.com:Chris Brown: What Was I thinking?

Sneak Peek: Rihanna's Revealing Interview with Diane Sawyer