<human>: Can you summarize the given text in a few sentences?

Hello! My lifelong friend and I have both gone off to separate schools, and he has changed completely. He went from quiet, insecure, and a introvert to having a complete God complex, drinking in excess, and hooking up with girls at parties. I know he has depression / mental problems, and I've tried to get him help. This isn't about that.

I need to confront him with something. Our other lifelong friend had told me about a recent hookup of his - **Apparently, he had sex with an extremely intoxicated girl while he was sober.** He's talked to me about his hookups, and he seems to have a very skewed view of sex. "I make her suck my dick, then I fuck her and leave." He also didn't know their names, and referred to them as numbers. 

Anyways, I don't feel comfortable with the thought of him anymore. I know I need to confront him and get the truth myself before I do anything, but I'm not sure how to approach this. I can't confront him face-to-face since we are 3 hours apart. 

It felt good to type that out, I've been keeping it to myself. Thank you for reading.
<bot>: Lifelong friend had a huge personality change, and may have had sex with an extremely intoxicated girl while sober. Trying to confront him.