Go and talk to your Study Abroad office - they can put you in touch with the students who went there last year and talking to them will help to get this in perspective.
PS. You are not going for ever, just a few months, and you can keep in touch easily with Skype, emails, and them visiting you etc. This is the point when you do have to grow-up a bit and do some things on your own, and they will all still be there when you get home.