Britney Spears is single again after dumping boyfriend David Lucado, which she confirmed via Twitter on Thursday.

The singer split from Lucado after finding out that he cheated on her earlier this month, something evidenced in a new video that's being shopped around, according to

The video shows Lucado dancing and making out with another woman, and Britney ended the relationship when she found out about the existence of the tape, which was shot earlier this month.

A rep for the singer confirmed the news to Us Weekly; and E! News reports that she's "heartbroken."

"She is in Vegas," a source said, "but she will get through it. She's a strong girl and he was never right for her."

The couple began dating in March, 2013, shortly after Britney called off her engagement to then beau Jason Trawick.

"David is very, very in love with Britney," a rep for Lucado told TMZ. "This is unfortunate and he hopes that it all works out."