"She liked him even more after she realized he's so talented," our source said."He's gone out after curfew and gone by her apartment and they've gone to [Hollywood bakery] Doughboys, which is one of both of their favorite places.
She likes the Red Velvet [cake] and he loves it because they serve breakfast all day," the source says."She's totally falling hard," they added.
The season seven winner was spotted wearing a wedding ring at his Oct.
A spy tell us that they clicked straight away and in no time Lacey, 20, was teasing David, 25, about his trip to hospital to be treated for high blood pressure. , "Lacey met David during rehearsals and they had an intense chemistry immediately!
Our source says Lacey, who finished in the top four of the dance contest last year, is "falling hard" for the rocker and that she's been in the audience at the Idol tapings for the last two weeks.
The pair met two weeks ago during rehearsals for the Idol Gives Back special and they've already been on several dates.
They were totally flirting and she was joking with him saying, 'Don't make your heart rate go up too high.' They have the same sense of humor."Even Lacey's ex, fellow So You Think You Can Dance contestant Hawk, who was also at rehearsals, saw the sparks between Lacey and David.
Our source says, "Hawk totally noticed and you could tell he was jealous.