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 says 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 tells Sawyer.

"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, that aired in part on "Good Morning America" on Thursday, 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.