Rex Heuermann went on a "date" with former prostitute, Nicole Brass, first meeting her on the escort website, BackPage, which was similar to how the victims crossed paths with the Gilgo Beach murderer, Brass told the New York Daily News.

The two reportedly arranged to have dinner at Steamroom seafood restaurant in Port Jefferson, Long Island, during the height of the deadly rampage about a decade ago. While the conversation started off normal, Brass recalled it soon took a scary turn.

Brass said, "He asked me if I’m a true crime fan ... We talked briefly about other serial killers, then he said, "Have you heard of the Gilgo Beach murders? That’s when he got real weird."

She claimed Heuermann brought up the Gilgo murders, which she had been following at the time, and he became enthusiastic while revealing details of which she was completely unaware.

Brass said Heuermann specifically discussed one victim she didn't know about and "it seemed like he was talking about it from experience, not a point of view."

She continued, "It didn’t seem like somebody who feels bad when he talked about the victims. It seemed like somebody who really wanted to brag about what they did, but couldn’t."

Brass went on to say Heuermann's body language changed while he discussed the crimes, appearing as if "he was visualizing it in his head and getting off to what he was saying."

Of course, Brass wanted to get the hell out of there, so she cut the dinner short, but Heuermann insisted on her leaving with him in his car to go to a hotel room he booked. Luckily, she was able to break away from him and split.

Brass said she never reported the incident to police because she was on parole at the time for a felony drug conviction.

As for Heuermann, prosecutors identified him as the Gilgo Beach killer last week, charging him with the murders of 3 sex workers and eyeing him in a fourth slaying. Heuermann has denied any wrongdoing.