[Warning: Potentially Triggering Content] Authorities in Michigan say 26-year-old Peyton Bilbia (pictured above, right inset) was killed in a violent stabbing on New Year's Eve, a night that's supposed to be about fresh starts and hope. Instead, it ended with police responding to a welfare check at Bilbia's home in Milford, which is about 40 miles northwest of Detroit. And the man who allegedly killed Peyton was the ex-boyfriend of the victim's new girlfriend.