no don't do that! i've felt pretty lonely today aswell, i've seen 1 person from halls, and i've been in my room for most of the day with my door wide open and still not seen anyone, and apparently everyone is going out tonight except me because im snowed under with work. Similarly, i don't belong to one particular group of people, but it's up to you to make the effort to get involved, as hard as that may be, ask around and see if anyone is going out one night and mention that you think you'll go along too, or alternatively, if someone stays in one night offer go along to their room and just have a chat or something, and try to get to know them a little better, this is what i've been doing, and always leave your door open if you're in the mood for a chat because then people will be more likely to stop on their way past and pop in. I wouldnt worry about people seeming to know one another so well, it probably just seems that way to you because you feel you're on the outside, but its likely that no one else sees it that way. Also join lots of societies that interest you and just go up to people to say hi, you might find that easier because you obviously have shared interests and something in common. And get your friends from high school on the phone, that's what they're for! A familiar voice is always a comfort. Don't get down about it, you've not been there long, give it a few more weeks, and feel free to pm me if you want.