Hello. I have recently felt really sad and down, constantly, especially at night. I feel sadness mixed with guilt and loneliness, but also get promiscuous urges. What I feel is indescribable. When friends cant make a certain date I get angry and depressed and vow to not do anything on that day, perhaps to spite them? However, I do experience happiness in particular situations - concerts, parties, when drunk etc. I get drunk to be happy. I want to know what is wrong with me.