I've had similar problems with past roommates. My resolution was to start wearing earplugs to bed. I bought an extra loud alarm clock so that I wouldn't oversleep and the roommate issue went away. They could have people over and I could get my sleep. I also get extremely moody when I don't get enough sleep and God forbid you wake me up before I'm ready... I get so angry I could spit nails. Ear plugs are my sleep savior. Hope this helps.