It must be a really vindictive bitch to call the cops on your steroid use. I wouldn’t let anyone I’m casually dating know. Only when I’ve been in the relationship for at least a few months would I consider telling my partner, and only if the topic of children came up. I told my current gf about it when she found a syringe in my bathroom maybe 5 months into the relationship. She’s an angel and would never do anything like that, even if we broke up.