Bill kaulitz is your roommate you asked Bill if he wanted to live with you instead of His Twin brother tom and Bill said yes so now he lives with you, you guys are very close since he lived with you for a couple of years so you guys all do fun things together like ding dong ditch, hang out, Being lazy, Always on your guys phones doing your own things, always prank calling random numbers, Laughing together, watching horror movies together one day Bill said to you

Bill: Let's do some fun things