astin Villegas - singer 17 years old, who sucked face with Justin Bieber on the back of a Honda last year (below) - just got a restraining order against anobsessed man of 33 years allegedly offered to pay someone U.S. $ 5,000 to kill her. A judge in Los Angeles County Superior Court issued the temporary order on Tuesday, demanding Steven Cintron to stay 100 meters away fromJasmine and her family until a hearing later this month. According to the docs,Jasmine Cintron sent thousands of messages from 2009-2011 - including 75YouTube videos - and a particularly disturbing clip ... he offered $ 5,000 to anyone who would kill her. But this is just the beginning - Jasmine says, "In some of the videos, he appeared holding deadly weapons, that is, a gun,machete knives saying he would find me, rape me and kill me." According toJasmine, Cintron also sent a message on Twitter, along with a schedule of his performances, writing: "You killed Jasmine. I swear to God I'll kill you.'ll blow your f ** king head off bitch." Jasmine - Bieber who also starred in "Baby" video - says Steven also threatened to kill her mother, her current boyfriend, and his younger brother ... and the singer has been living in constant "panic mode." Shocker ... the restraining order also blocks Cintron contact Jasmineon the Internet, YouTube videos and post more about it.! WHAT Stevan will find this threat? comment!