JACKSONVILLE, Fla. -

The high school security guard arrested and fired after being accused of having an inappropriate relationship with a student will only face misdemeanor charges.

According to the original arrest affidavit filed against Douglas Tilley, 25, he developed a relationship with a 17-year-old students at Frank H. Peterson Academies of Technology, where he worked as a security guard. The two exchanged nude photos, police said, and when she threatened to break up with him, he sent the photos to her mother.

Tilley has bonded out of jail on the original charge. On Monday, the original charge was dropped and he was charged with child neglect and contributing to the delinquency of a minor.

A letter from Principal Peter Senn firing Tilley says he was fired for "inappropriate conduct with the student ... unbecoming of a Duval County public school employee," according to the file from the school district.

Tilley was hired in August. According to his personnel file, it was his first job at a school. He was fired Jan. 22.

Tilley was making just under $9 an hour as a school board employee. His criminal record was clean.

His attorney said they're were working to get a resolution that all parties could be comfortable with.