(Portland, OR)  --  A massage therapist is scheduled for a 90-day stay behind bars after pleading guilty to sex abuse involving a teenage girl.  KPTV reports 40-year-old Aaron Sanne of Hillsboro was a massage therapist at the Sunset Athletic Club in Portland, where his clients included minors.  Police say Sanne gained the trust of the 15-year-old before sexually abusing her.