COLORADO SPRINGS, Colo. -- A man accused of trying to slip a tranquilizer into his date's drink at a Colorado Springs restaurant last year will tell jurors when he testifies that the woman wanted to be drugged, his attorney said Tuesday during opening statements in the trial.

Robert Psaty is a former Florence City Council member and a state hospital clinician.

Prosecutors said a waiter at a Ruby Tuesday saw Psaty drop something into a woman's drink last year while she was away from the table. The waiter took the drink and called police.

Investigators said the drink contained valium.

The Colorado Springs Gazette reported that defense attorney Joe Koncilja said the victim told Psaty she was bipolar and asked him to give her a Valium if she became too hyperactive during dinner.

The newspaper reported the victim testified Tuesday and denied giving Psaty the anxiety relief medication or asking him to spike her drink. She said she didn't even have a prescription for Valium.

Psaty has pleaded not guilty.