Brian Cassella / baiduhai
Tamara Reed outside Robert A. Black Magnet Elementary School on Friday, April 13, 2018. (Brian Cassella/baiduhai) 
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player ready...Substitute teacher Aaron Williams-Banks took 14-year-old Tamara Reed’s cellphone right from her hands during class, held it for a moment, then handed it back to her
Reed was startled: Her teacher had sent a text to himself, leaving a record of his private number on her phone.
A few days later, curious and a little flattered, Reed sent him a simple text: “Hey.”
That launched a cascade of messages between the teacher and a student half his age. Soon he was texting her until late at night. His messages quickly slid from casual to flirty to obscene, records show.