Former Ultimate Fighting champion Tito Ortiz wipes a tear from his eye as he listens to  his attorney Chip Matthews speaks to the media  Monday, April 26, 2010, at the Firenze Osteria restaurant in the North Hollywood section of Los Angeles.  Ortiz had been  arrested on suspicion of domestic violence towards his girlfriend Jenna Jameson. (AP Photo/Danny Moloshok)AP – Mixed martial arts star Tito Ortiz claims his ex-porn star girlfriend is addicted to Oxycontin, and he blames Jenna Jameson’s drug use for his arrest Monday on suspicion of domestic violence.