Raven, 33, is accused of stabbing his pregnant wife to death in their home on Durham's Ferrand Drive back in 2005.
Prosecutors have tried to portray Janet as a woman who was afraid and intimidated by her domineering husband. However, Abaroa's defense has used information from Janet's work computer to paint a different picture of her - suggesting she might have considered an extramarital affair.
A computer forensic expert told jurors last week that he retrieved flirty, sometimes sexual email messages from Janet to a former boyfriend from the machine.
On Tuesday, Janet's ex-boyfriend was visibly uncomfortable as he told the jury he didn't mention the messages to police at the time of Janet's murder because he felt they were harmless - not a reason for murder.
"Flirting ... joking around ... we had dated, so I think when we finally did start talking again, it was very easy to kind of have that type of relationship again," Scott Hall said. "Clearly, it was inappropriate and I should not have done that ... that was it."
The defense introduced the flirty emails after the computer hard drive turned up in a locked police file cabinet.
Almost two weeks ago, prosecutors made the surprise announcement that the drive and a phone described as a Palm Pilot belonging to Raven had been found with other sealed items at the Durham Police Department. They had apparently been there for eight years.
Under cross examination, Abaroa's defense attorneys asked Hall whether he had been asked to submit fingerprints or DNA to exclude him as a potential suspect.
Hall said he was never asked, but was willing to do so.
After 19 days of testimony from both sides, closing arguments could begin as early as Wednesday.