I'm depressed. It's not clinical depression, probably, but it feels so sweet to just sulk and sulk and sulk and be apathetic. When I'm around someone, though, I am an energetic and happy person. What's wrong with me?

Wasn't there some silly movie I saw about this a couple years ago? I didn't hold much to a lot of what they were saying but there was something about being addicted to the endorphins our brains release during some emotions. Sounds like that.

how you think when you're alone that's wrong, simple as that

I'm this way because I'm addicted to instant gratification. That means I also do lots of drugs.