yeah, like others have said, give it some time. if it is your top choice, you will (probably) end up there. and am sure your friend will find a good fit too.
i opened this thread because of your title, and i am on the other end of the spectrum. there are a couple schools to which people from my lab have been accepted. and i am thinking, if those schools offer me admission, i probably won't feel very happy about attending the program with folks whom i've known for years. not that i have bad relationship with them or anything - they are amazing friends - but i would like some fresh air, new cohort, and all that. if i get in into those schools, perhaps i might change my mind after giving it a long thought... but time will tell.