A former Montgomery County girls’ volleyball coach, who admitted sending sexually explicit messages and nude pictures of himself to an undercover agent posing as a 13-year-old girl, is going to jail. 34-year-old Michael Villarose, formerly of Plymouth Meeting, has been given three to 23 months in county prison, followed by ten years on probation.  He is also barred from coaching, using the internet and having unsupervised contact with minors other than his baby daughter.  He pleaded guilty to unlawful contact with a minor and criminal use of a computer.  Court documents say he contacted the agent through an internet chat room and asked her to perform various sex acts.  He resigned from his coaching position at Kennedy-Kenrick High School in Norristown at the time of his arrest more than a year ago.