has he been accused of doing drugs ?
Yes, had admitted himself into a treatment facility for substance addiction.
Cory Monteith
On March 31, 2013, Monteith's publicist announced that Monteith had admitted himself into a treatment facility for substance addiction. 
who does finn from glee end up with UNANSWERABLE who is finn hudson? He is a fictional character from the Fox musical comedy-drama series "Glee". how is this character received by the people? The character of Finn has gotten mixed to positive reviews from television critics. has it received any honours? Yes, in 2011 Teen Choice Award in the Choice TV: Actor Comedy category. what is this character like? The character appears as a person who walks a fine line between following his dreams and balancing what other people expect of him. who acts in this role? Cory Monteith who is he? He was a Canadian actor, singer and musician.
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Cory Monteith [SEP] Substance abuse
On March 31, 2013, Monteith's publicist announced that Monteith had admitted himself into a treatment facility for substance addiction. He had previously received substance abuse treatment, when he was 19, following a history of drug use that began around the age of 13. According to "Glee" co-creator Ryan Murphy, Monteith's admission to rehab in March resulted from an emergency intervention on the Paramount lot, in which Murphy and other members of the "Glee" cast and crew urged Monteith to accompany doctors to the rehab facility, which had been arranged by the show. Monteith agreed, and was consequently written out of the final two episodes of "Glee"'s fourth season after being assured that he would still have his job upon his return.