Is Usher engaged?! It is reported that the singer popped the question to his longtime girlfriend Grace Miguel ... and it appears she said yes!
A source tells the magazine, "She's happy but they're trying to keep it quiet."
The couple has yet to actually publicly confirm their engagement, but were spotted together at the Golden Globes Art of Elysium Heaven Gala in Los Angeles this week ... and Grace was wearing some SERIOUS bling on that finger.
