Mays responded, according to the witness, that the girl knew what she was doing.
The witness said he responded: "No, she don't."
Asked why he said that, the witness said "because I saw how drunk she was at the party."
On cross-examination, the witness admitted to Richmond's attorney, Walter Madison, that he was angry by what he heard happened to the alleged victim because he considered her a friend.
A police captain also testified Thursday about finding two photos of a nude girl on a cell phone belonging to Mays.
Consent vs. non-consent
The case will hinge not on consent but rather on whether Mays and Richmond knew that the girl was too impaired to know what was happening the night of the alleged attacks, prosecutor Marianne Hemmeter said in opening statements Wednesday.
Six witnesses for the prosecution testified Wednesday, saying the alleged victim appeared to be drunk: stumbling, swaying and throwing up.
One witness, a 17-year-old girl who went to a party with the alleged victim, said she and the girl shared a half a bottle of vodka, which they each poured into a flavored crushed ice drink.
The alleged victim also had a beer and seemed to get drunk very quickly, the witness said.
The party broke up about 12:30 a.m., and the girl left with Mays and Richmond, according to the witness, who said she pleaded with her not go. The witness said she didn't see the girl again until the next day, when she picked her up at another home.
She described the girl as a "mess," wearing her stained shirt inside-out.
On cross-examination, Richmond's attorney, Madison, asked the witness whether her view of what had happened that night had been framed by the tweets and social media posts she had seen about the victim and whether what she had seen in those messages made her angry.
She said it had.
Another witness, a 17-year-old friend of Richmond's, said on cross-examination that while the girl appeared drunk, he did not believe she was unaware of what she was doing.
The boy also told Mays' attorney, Brian Duncan, that he hadn't seen the girl drinking and had not witnessed Mays involved in any sexual contact with the girl.
The trial, which is likely to stretch into the weekend, is moving quickly to accommodate the schedule of visiting Judge Thomas Lipps, who is presiding over the trial without a jury. A verdict is expected by Sunday.
The case has cast an unwelcome spotlight on Steubenville, a small, down-on-its-luck town along the banks of the Ohio River.
Critics have accused community leaders of trying to paper over rampant misconduct by players of the highly regarded Steubenville High School football team and have suggested that other students took part in the assaults or failed to do enough stop them.
The case has attracted the attention of bloggers and even the loosely organized hacking group Anonymous, which have questioned everything from the behavior of the football team to the integrity of the investigation.