Don't do it, you might become enimies before long!!!
It's best to have your own place, there won't be anyone there that you don't want there....
I don't even live with my girlfriend, she just stay's over a few nights a week...we get along better that way.. Same with friends, if you hang out too much you start to have arguments over stupid shit..
It's not always like that...but maybe you should look at your options.......
