Miguel Is Engaged to Longtime Love Nazanin Mandi -- See the Massive Ring!

Getty Images

After 10 years of dating, Miguel finally popped the question, with some help from a massive diamond.

Congrats are in order for Miguel and his longtime girlfriend, Nazanin Mandi!

The couple, who have been dating for more than 10 years, recently got engaged, a source confirms to ET.

WATCH: 9 Celeb Weddings We Can't Wait For

From the looks of the massive ring Mandi flashed in an Instagram post on Monday, it looks like the 30-year-old singer wasn't messing around when it came to finding the right engagement ring for his lady love.

"When you get all dolled up but decide to stay in … Eat … And watch A Haunting," Mandi, 29, captioned the selfie, in which her huge ring was on full display.

PHOTOS: Size Does Matter: The Biggest and Best Celebrity Engagement Rings

Congrats to the happy couple!

For more on some of the most expensive, elaborate engagement rings in Hollywood, check out the video below!