<human>: I seem to only be happy when there are other people around. If I'm in the house by myself, I just feel so low and I don't know why. It's like I get the symptoms of depression when there's no-one around, but as soon as there's even just one person present I'm fine again. 

On my own I cry for, what feels like, no reason. I don't feel like doing anything, I have real negative thoughts. If I'm lying in bed on my own, my mind wanders and thinks about so much shit and I dwell on my low-self esteem issues and loads of other negative stuff, and even get the urge to hurt myself. I try to distract myself with TV or playing guitar or music, but I just lose interest and don't want to do anything. 

But I only get like that when I'm on my own. I'm currently living with my best friend and will be living with a total of 6 others (including my boyfriend) in September for second year of uni. My boyfriend is at the house quite a lot, and my best friend is usually in the house, so I'm not on my own a lot. It's just that even if I'm alone for a few hours, I start feeling like shit. When other people are around, I am completely fine. I don't feel depressed or like hurting or anything. It's like I can only be happy in the presence of another human being. 

The problem right now is the fact that my housemate is currently in Amsterdam until Monday, and I won't be seeing my boyfriend until possibly next Friday. I've got a shift in work tomorrow, and I've got a friend coming to stay a couple days from Wednesday, but it's just gonna be a tough 24 hours or so while there's no-one else around. I don't know why I get like this, I hate it. I don't wanna have to rely on other people to be happy, 'cause I know there will be times where I will have to be by myself for a while. I just wanna be happy on my own.

Can you condense the text into a few key points?
<bot>: I get miserable when I'm in the house by myself, but I'm completely fine when there's other people around. I don't wanna be reliant on others for happiness, but I don't think I can help it.