"""True Blood"" star Joe Manganiello<a href=""http://www.people.com/article/sofia-vergara-engaged-joe-manganiello?xid=rss-topheadlines"" target=""_blank""> reportedly popped the question</a> to ""Modern Family"" star Sofia Vergara with a <a href=""http://www.dailymail.co.uk/tvshowbiz/article-2890249/Sofia-Vergara-42-flashes-diamond-ring-Hawaiian-vacation-beau-Joe-Manganiello-38.html"" target=""_blank"">gorgeous diamond ring</a> during a romantic vacation at a Hawaiian resort on Christmas Day 2014."