Andrea Constand, the first woman to accuse Bill Cosby, speaks about her assault

Sexual assault survivor Andrea Constand is breaking her silence and speaking for the first time about her sexual assault by Bill Cosby. Constand was the first woman to accuse Cosby of drugging and raping her, providing key testimony that lead to his conviction this April.

In an exclusive interview with NBC's Dateline, Constand details the assault and the events leading up to it for the first time publicly.

Constand was working as a basketball administrator at Temple University when she first met Cosby, a Temple alumnus. Cosby began mentoring her, giving Constand career advice. One day, Cosby invited Andrea to his home under the guise of career counseling.

"He had three blue pills in his hand,” she said. “And he put his hand out and I said, ‘What are those?’" Constand remembers Cosby's reply: "'They're your friends, just put 'em down.'"

Constand told Dateline's Kate Snow that she took the pills because she thought they would calm her down. At the time, Constand said, she trusted Cosby.

After swallowing the pills, Constand she said she couldn't walk, and her speech was slurred. Cosby then moved her to his couch and assaulted her.

Andrea said she was in and out of consciousness. "My mind is saying 'Move your hands! Kick! Can you do anything? I don't want this, why is this person doing this?', and me not being able to react in any specific way. I was limp."

After the assault, Constand didn't speak out because she thought no one would believe her.

Cosby never denied that he'd had a sexual relationship with Constand, but said the contact was completely consensual. In April, Cosby was finally convicted on three counts of sexual assault, and faces up to 30 years in prison.

To date, 60 women have accused Cosby of sexual assault.

The entire interview with Constand is set to air Friday at 10 p.m. EST on NBC.

Related stories recommended by this writer:

● Lauren says she was raped at a high school party. He denied it. So she started taking screenshots

● The white freshman who poisoned her black roommate with tampon blood STILL hasn’t apologized to her

● Ed Westwick accused of imprisoning and sexually torturing a woman during a two-day ordeal

@aribines