Fiance isn't talking to me

My fiance is my high school sweetheart. He's off at college. He is part of a fraternity and lives in a fraternity house and has a roommate/best friend. Now they are what you would typically expect a fraternity to be like but my fiance is still pretty down to earth. Monday though, he was walking on university with his roommate is his fraternity and they were gonna go back to the house together but my fiance decided to go hang out with some other fraternity brothers and his roommate said it was fine. When my fiance got back to the house he found him hanging from a ceiling in their bedroom. He absolutely lost his mind and hasn't been talking to me. The other boys I talk to said he's been sleeping in the living room because he can't sleep up there so a few other have slept down their with him but he hasn't spoken to me. I'm not sure what to do because I don't want to interrupt his grieving.