I didn't say you ARE a statistic OR a stupid teenager. I said don't BECOME one. I'm sure you and your gf are well established and have been tested and have discussed consequences. I'm talking about bringing this new person in. How do you KNOW she's clean or won't lie or is ready for consequences herself? The conversation between you online seemed very sexually focused, not relationship focused. If she's more about a good time than a lasting relationship, who knows? This isn't a reprimand, but a concerned person telling you we're all irresponsible, too trusting, or just stupid from time to time and hoping you will be safe rather than sorry.
I'd rather be hated for who I am than loved for who I am not.