Pop star Jessica Simpson sang "Happy Birthday" to her boyfriend Tony Romo Saturday night in Dallas, and also managed to smear his face with cake and icing. The celebration was in honor of Romo's 28th birthday.

The Dallas Cowboy star's actual birthday is April 21, but the celebration took place Saturday night at Suite, an exclusive nightspot in Dallas. According to People.com, Simpson took the mic at one point during the night and sang "Happy Birthday" to her fellow.

She also fed cake to Roma, and at one point licked cake from his face as everyone cheered. The cake was a blue, star-shaped No. 9 birthday cake, a nod to Romo's football jersey number.

Simpson and Romo continued their birthday celebration on Sunday, when they were spotted at Bent Tree Country Club where Romo played 18 rounds of golf while Simpson rode along and watched from a golf cart.

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