Olympic gymnast Aly Raisman said she was “innocent” and thought the USA Gymnastics doctor she accused of sexually abusing her for years “was just looking out for me.”

“I was just really innocent. I didn’t really know. You know, you don’t think that of someone. … I trusted him,” Raisman told CBS’ “60 Minutes” in an interview aired on Sunday.

Raisman, 23, said she thought team doctor Larry Nassar, who spent nearly 30 years with the organization and began treating her when she was just 15, was providing medical care.

“I didn’t know anything differently. We were told he is the best doctor. He’s the United States Olympic doctor and the USA Gymnastics doctor, and we were very lucky we were able to see him,” she said.

The gold medalist said she had no idea that Nassar, who has also been accused of sexual abuse by McKayla Maroney, Raisman’s teammate from the 2012 London games, gained their trust by building an emotional bond with the athletes.

“He would always bring me, you know, desserts or gifts. He would buy me little things. So I really thought he was a nice person. I really thought he was looking out for me​,” she told CBS.​ ​

​Raisman said she came forward about Nassar to warn others to always be on guard.

“I want people to know just because someone is nice to you and just because everyone is saying they’re the best person, it does not make it okay for them to ever make you uncomfortable. Ever​,” she said. ​

More than 130 women have accused Nassar of sexual assault.

Nassar, who is in jail and awaiting sentencing after pleading guilty to child pornography, denies he sexually assaulted underage girls. His lawyers did not respond to requests for comment, “60 Minutes” said.

She ​blames​ USA Gymnastics, which has a standing policy against adults being alon​e​ with minors, for not looking out for her and the other athletes.

​”​Nobody ever educated me on, ​’​Make sure you’re not alone with an adult.​’​ You know, ​’​Make sure he’s not making you uncomfortable.​’​ I didn’t know the signs. I didn’t know what sexual abuse really was. And I think that needs to be communicated to all of these athletes, no matter the age​,” she said. ​

Raisman said it didn’t even dawn on her that Nassar could be sexually abusing her until an investigator hired by USA Gymnastics asked her about the doctor in 2015 — a year before the Olympic Summer Games in Rio.

“And I said, you know,​ ​’Well, his touching makes me uncomfortable, but he’s so nice to me,” she told CBS. ” And I don’t think he does it on purpose because, you know, I think he cares about me.​”​

She said she’s still dealing with the effects of the abuse.

“I think it’s important for people to know too I’m still trying to put the pieces together today. You know it impacts you for the rest of your life​,” she said. ​