Justin Long and Jonah Hill
Things didn't always go smoothly for Justin and Jonah as roommates. The two lived together in LA in the mid-2000s, but as Justin told Watch What Happens Live in 2016, they were "both equally pretty messy." "We started getting in little fights," Justin said, adding, "He left the bathroom door open, didn't clean up after himself. Little things like that. It got to be like an old married couple. It was time for a separation." On the upside, they "laughed like hyenas" during their time together and are "still great friends."