first time about his family fight, battling with his ex-wife for custody of their two kids. The singer sat down with usher with oprah in an interview. ♪ usher didn't hold back. I really felt we... See More
first time about his family fight, battling with his ex-wife for custody of their two kids. The singer sat down with usher with oprah in an interview. ♪ usher didn't hold back. I really felt we were friends. She made us enemies in a way that I could never understand. Reporter: The r&b mega star opening up overnight in the next chapter, talking about his marriage, the tabloid headlines and the emotional courtroom testimony fight for custody of their son. That's righted to swing and spit. It wasn't until I was on the stand that I cried, I realized this was an attack. Were you in love? Yes. Yes, I was in love. Reporter: Usher said while they may have moved too fast, he was crushed by the way people criticized their relationship. This is supposed to be the person that I'm going to share the rest of my life with. And nobody is, you know, responding the way I'd like them to respond. Reporter: But the singer said the relationship quickly soured and admit head played a part. Were you faithful with her? I was faithful in heart, but not all the way. Reporter: He was devastated when 11 kyle glover, foster son from a previous marriage was killed in july after being hit by a jet ski. I miss kyle. Was kyle a part of your marriage? A great part of my life. It hurts me to speculate that people said I and we at the funeral. I absolutely was at the funeral. Reporter: Usher now says he's focusing on being a better father for his own children. In august, a judge granted him full custody. I've had the time of my life. Reporter: And while he opens up about his personal life, it was his personal question that made even him blush. Have you or do you make love to your own music? Some way say this will be rather narcissistic but, yes. Oh! Do we need to know that? I don't know. I know that now. We wish usher the best. You're wondering why I have my
This transcript has been automatically generated and may not be 100% accurate.