Selena Gomez has reportedly blamed Justin Bieber for her problems because she was exposed to excesses by being around him and his friends.
The 21-year-old singer had checked into a rehab clinic recently and sought help for a combination of problems, including alcohol, marijuana and prescription drug Ambien.
According to a source, the 'Come and Get It' hitmaker came to understand just what a bad influence Bieber had been in her life, Radar Online reported.
Another source claimed that it isn't sure if Bieber pushed her to drug use but amongst their close knit group of friends, smoking was common and they would smoke marijuana together regularly.