Adriana Lima's GQ cover (left) and Marko Jaric
Inez Van Lamsweerde & Vinoodh Matadin/GQ; Rocky Widner/NBAE via Getty
06/13/2008 at 12:30 AM EDT
Brazilian supermodel Adriana Lima received an engagement ring Thursday night – her birthday – from basketball star Marko Jaric, his rep tells PEOPLE.
"He asked and she said yes. They are both incredibly happy and couldn't be more in love," says publicist James Weir.
Lima, who turned 27 on Thursday, and Jaric, 29, who plays for the Minnesota Timberwolves, have been dating for about nine months.
The normally stoic Serb sports star has admitted he fell hard
for the Victoria's Secret beauty.
"I was not the person to fall in love easily. I am a difficult person from that standpoint," he told PEOPLE in March. "Now, it's a little different situation."
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