A bit of background info: I'm a freshman in college. I've made friends with a bunch of guys (my roommates included) on my floor and we all hang out. We recently chose our dormitory housing together for next year, and the way it worked out had 4 rooms of 3 guys each all on the same floor. We were all psyched about it. Fast forward to two days ago. My brother who is a junior at the same college has been apartment hunting with his five friends who are also juniors. They find a big place that houses twelve people, and its very cheap and close to campus. My brother offers to me to bring myself and 5 friends and we can have a big apartment for all of us. I'm super psyched about the idea and I suggest it to my current roommates who both bite. the three of us choose to approach the one of next year's other three rooms with whom we are closest. They also bite. within a day the details are settled and we decide to take the apartment. Now the tricky part. We have to tell the other two rooms (6 people) that we won't be on the same floor as them next year. The 6 of us are saving thousands of dollars, and I'm taking what is likely my last opportunity ever to live with my brother as he plans to live in Europe. It makes logical sense even though it is shitty to renege on our prior setup. We told the other six guys, emphasizing that we're only 10 minutes away and we'll still be taking classes together so the only difference is physical distance. Some of them didn't take it very well. Am I / are we the asshole(s) ?
For clarification - the 4 rooms were separate so it's not like us leaving affects their housing in any manner. 