Thanks for the help guys. I didnt mean to cause any friction between anybody by posting this, so sorry if i have.
I guess the right thing to do is to tell her. I will just have to pluck up the courage.
I think somebody said it depends on the severity of the drug? The drug was ecstasy. I know it was stupid, and i feel a bit stupid. It might not seem that bad to some people.. i know there a worse drugs out there that i wouldnt even think about touching. It may sound stupid but i just feel like I have broken my girlfriends trust.
But again, thanks for the help guys, the right thing to do is to tell her, if she finds out another way then that would be worse.