Get ready for a sweetheart of a destination just 45 minutes north of Denver with these 5 reasons (with more reasons added each year) to make Loveland. Colorado events for your Valentine’s Day destination. Loveland transforms into Colorado’s romantic getaway of the season in February. Known as the nation’s Sweetheart City, in Loveland, Valentine’s Day is more than a day. It is a 2-day, action-packed event with romance and fun during the Loveland Sweetheart Festival – Love Locks and Lights. (And did we mention it’s FREE?!)