Lady Antebellum's Dave Haywood is engaged

Dave Haywood and Kelli Cashiola are engaged..

STORY HIGHLIGHTS

• Haywood surprised Cashiola with a marriage proposal on Monday evening


• A string of Christmas lights spelled out "Will you marry me?" outside her house


• The couple, who have been friends for five years, publicly revealed their romance last month

() -- Dave Haywood wrapped up his Christmas shopping early -- and even got a jump on Santa Claus -- surprising girlfriend Kelli Cashiola with a marriage proposal on Monday evening, a rep for the confirms to PEOPLE.

Haywood, 29, made his gal's favorite holiday one she'll never forget by staging an elaborate setup to pop the question.

After picking Cashiola -- VP of Marketing/Brand Management for Warner Music Nashville -- up from her Music Row office, the musician asked her to slip on a blindfold as they turned onto her street. Once inside her home, Cashiola was delighted to discover that while she was at work, Haywood had transformed every room into a sparkling winter wonderland.

But it was outside that the reason for the blindfold was revealed -- a string of Christmas lights spelled out "Will you marry me?" on the front of the house. As Haywood put the ring on her finger, Cashiola, 29, replied, "Yes!"

A date has not been set for the nuptials, though it's presumed it will be after bandmate Hillary Scott's to fiancé Chris Tyrrell.

The couple, who have been friends for about five years, publicly revealed their romance last month when they walked the CMA Awards red carpet together, accompanying Scott and Tyrrell, as well as third bandmate Charles Kelly and his wife Cassie McConnell.

Lady Antebellum is taking a brief break for the holidays from their tour, which resumes January 27 in Tulsa, Oklahoma. Their "Own the Night" album is nominated for a Grammy for Best Country Album.