Prosecutors say the 36-year-old Philadelphia man began stalking Erbe in 2008 by trying to hug her while she was filming on location in Manhattan.
Authorities say once he was rebuffed, he began composing creepy missives about her on a social network.
The 44-year-old Erbe testified that she was scared because she thought Nagel was obsessed with her.
Nagel took the stand to say it was all a misunderstanding.
