Girls Aloud star misses ex-boyfriend?

Sarah Harding may not be over her relationship with ex-boyfriend Mikey Green.

The Girls Aloud singer apparently got jealous when she spotted her old flame flirting with a model at a London club on Tuesday night.

"She was looking daggers at them," one source told The People. "She'd obviously been hit by a touch of the green-eyed monster. Ironically, Sarah and Mikey had both skipped another party to avoid each other."

Harding recently complained that there is "no romance" in her life.