'When Brett started saying things about his drinking, and his use of certain words, sexually oriented words, I knew he was lying, because he was my roommate, ' Roche said in the interview.
Roche believes he saw Kavanaugh "blackout drunk", and witnessed him vomiting and having "a lot of trouble getting out of bed".
"We said, unequivocally, that each of us, on numerous occasions, had seen Brett stumbling drunk to the point that it would be impossible for him to state with any degree of certainty that he remembered everything that he did when drunk", they wrote.
The agency has also spoken to Ramirez, who has claimed Kavanaugh exposed himself to her at a Yale party when both were freshmen.
Why it matters: Senators who may be on the fence about the allegations or Kavanaugh's truthfulness won't get all the information they need to make a completely informed decision.
The FBI's interview with Ramirez is part of a report on Kavanaugh that has not been publicly published; Senators and some aides were allowed to review it in private Thursday morning. Sen.
Judge Brett Kavanaugh testifies before the Senate Judiciary Committee during the third day of his confirmation hearing to serve as a Justice on the Supreme Court at the Capitol in Washington on September 6, 2018.
Jeff Flake, R-Ariz., who pushed to delay the vote on Kavanaugh so the FBI could investigate, said the judge would not be confirmed if the probe revealed he had lied to senators.
Still, Democratic lawmakers have expressed alarm at the FBI's apparent overlooking of potentially important witnesses in their probe of Kavanaugh.
Roche is just one of the people who have appeared suddenly in the national narrative as the drama involving Kavanaugh had unfolded. Sheldon Whitehouse, D-R.I., asked Kavanaugh its meaning during a hearing last week.
In the op-ed, Roche wrote he was willing to talk to FBI investigators, but when speaking to Anderson Cooper, he said he had "never been contacted about Brett by the Federal Bureau of Investigation, ever".
"I did not want to come forward", he wrote in the op-ed. "I feel like I'm being silenced".
In the Slate op-ed, Roche notes he was raised in a Republican family - his mother was a Republican state representative in CT and "my father owns a MAGA hat".
Lending further credence to the alumni, two other men, who attended Boston College with Quinn, said he had taught them the game and they played it. "I don't think it would be fair to share those in public".
"I am very alarmed, first, that I was denied an FBI investigation for five days, and then, when one was granted, that it was given on a short timeline and that the people who were key to corroborating my story have not been contacted", she said.
'There is no chance in the world that they're going to scare us out of doing our duty, ' he said.