The 79-year-old entertainer, once known as "America's dad" for his role in the 1980s television series "The Cosby Show", has denied all wrongdoing.
Almost 60 other women have made historical allegations against the actor, but Ms Constand's case is the only one that has made it to trial. She lost her ability to take risks on friendships, relationships.
Constand admitted she did seek out attorneys who specialize in sexual assault cases, but she said a lawsuit was not her intent.
On Tuesday, Constand described to the Norristown, Pa., court how the famed funnyman fed her three blue pills to help her "relax" at his suburban Philadelphia mansion.
Agrusa contended that, after poring over her phone records, Constand realized she'd placed almost 10 calls to various friends the night of March 16.
She called Cosby, "A Temple friend".
"I called him on the 14th", she said.
But Constand told prosecutor Kristen Faden she was so out of it she couldn't tell the Fat Albert creator to stop. She felt "terrible" about it, she said, especially when her mother brought Cosby some Canadian souvenirs. The jury will be sequestered for the duration of the trial, which is expected to last about two weeks. Constand then sued Cosby in civil court, ultimately settling for an undisclosed amount.
Constand also said she went to a performance of Cosby's later that year with her family in Canada after Cosby arranged to drop off tickets. "She was almost hysterical", Sewell said, according to CNN. She testified in graphic detail about the evening in 2004, when she claims he drugged and sexually assaulted her.
The Associated Press reports that Constand will return to the witness stand on Wednesday, the third day of the trial that could land Cosby in jail.
"She couldn't say no", Feden said. According to CNN, the defense heavily underlined the fact that Johnson's claim ostensibly stemmed from verbal abuse by her boss, but Miller's memory of her teary deposition tracked closely with the version of events Johnson outlined Monday.
Read: How Much Is Bill Cosby Worth? Cosby lawyer Angela Agrusa also pressed Constand on why she stayed in contact with Cosby afterward.
The trial kicked off yesterday, with Cosby's lawyer Brian McMonagle attempting to present his client as a man who has been framed and telling the jury that "the only thing that is worse than [sexual assault] is the false accusation of sexual assault".
She said she saw a jumble of prescription drug bottles in Cosby's bathroom. Cosby is accused of drugging and sexually assaul.
Prosecutors hope Johnson's testimony will signal to jurors that Cosby had done it before.
The defense has attacked Johnson's credibility over discrepancies in her accounts, including the year it occurred.
Monica Lyons, of Philadelphia, answered, "49".
Like so many other Cosby accusers whose prayers went unanswered.
Lyons was ecstatic about the birthday greeting.
Cosby is charged with three counts of aggravated indecent assault.
Shocked, her mother called Cosby to confront him, the charging document says, and eventually spoke to him by phone for more than two hours.
The lawyer focused on about half a dozen calls of varying duration to Cosby's home in NY over a particular 24-hour period.
WHAT'S NEXT: Defense lawyers will continue their cross-examination of Constand on Wednesday.
Bill Cosby showed up to the courthouse with his TV daughter.