Actress Sofia Vergara is single again after breaking up with her boyfriend, according to a report.

The Modern Family star, 39, has been dating Nick Loeb since meeting him at a Golden Globes party in 2010, but they are said to have parted ways last weekend after a series of arguments.

Vergara then attended New York's annual Costume Institute Gala on Monday solo.

A source tells New York Post gossip column Page Six, "Sofia was confiding in friends at the ball that she and Nick have split. They have been fighting a lot recently and have been on the brink of splitting many times. It is not yet clear if they are over for good, but they are done as a couple for now."

Vergara, who has a teenage son called Manolo from a previous relationship, recently revealed Loeb wanted to start a family with her, but she was considering freezing her eggs as she didn't feel ready to have another child.
 
She said, "We have a very happy relationship... Nick wants babies. Imagine me, again with a baby, when Manolo is 20! I guess eventually I'll do it - for love."

Slideshow: Sexy Colombian Sofia Vergara!