There are 5 books in the George Miles Cycle series. The newest book is Period which came out in 2000.

1
Closer

Closer
With an introduction by Lynne Tillman

Physically beautiful and strangely passive, George Miles attracts his fellow students with a mysterious promise, like a wallet lying on the street. Closer follows the links of desire that drag George into the arms of boys like John, an artist who deliberately drains his…
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3
Try

Try
Ziggy, the adopted teenaged son of two sexually abusive fathers, turns to his uncle, who sells pornographic videos, and his best friend, a junkie, in a complex tale of sexuality, abuse, and attraction. 15,000 first printing. Tour.

5
Period

Book cover of Period
Set in a world of secret Web sites, this book touches on the many aspects of modernday America, such as pornography and Satanism, in this final addition of the author's fivebook cycle, which includes Closer and Frisk.