MILFORD, Conn. (CBS/AP) It was a tattoo.
That is all that it took for a Connecticut woman to realize that she was having sex not with her boyfriend, but his twin brother.
Now ex-cop Jared Rohrig has been charged with first-degree sexual assault and criminal impersonation charges.
The twenty-five-year-old pleaded not guilty to allegations he posed as his twin to have sex with the woman and then raped her when she realized the ruse and tried to leave.
The former Connecticut police officer appeared in Milford Superior Court last Wednesday Oct. 7.
The victim told Milford police that she was in a relationship with Rohrig's brother, Joseph, and went to see him at the Rohrigs' home in July.
Police say that when the victim arrived, she got into the hot tub with Jared -- whom she believed was Joseph -- began kissing him and agreed to go to an upstairs bedroom with him.
The woman realized during sex that she was with Jared Rohrig -- not Joseph --because Jared didn't have a tattoo on his backside like his brother. She alleges Jared Rohrig continued the sex against her will when she tried to leave.
She told police that she got out of bed and tried to leave, but that Jared "grabbed her arms and threw her on the bed, where she continued to cry," and he continued to rape her.
Jared Rohrig resigned from the Orange police department last month. His court case was continued to November 18.