ICON Jennifer López and Casper Smart are THROUGH!

Jennifer Lopez may be single again very soon. Page Six reports the pop diva is ready to call it quits with her boyfriend, Casper Smart, following claims that he’s been sexting transgender models behind her back. Lopez and Smart have been dating since 2011.

Sources close to Lopez, 44, who recently released a new single and is set to drop a memoir this summer, tell the paper she is furious that Smart’s alleged cheating will draw media attention away from her work.

On Monday, details of 27-year-old Smart’s second alleged sexting transgression, this time allegedly with a transgender female model named Xristina Marie, leaked online. “[Jennifer] is coming back to the Bronx and the only thing anyone can talk about is her boy toy and the transsexuals,” the source adds, referencing Lopez's first-ever concert in her old 'hood this week.

Another source claims, “Jennifer is getting tired of all these allegations. She doesn’t need this drama and is ready to move on. The focus should be on her work for the foundation and the concert, not Casper Smart.”

The latest allegations against Smart come after transgender bikini model Sofie Vissa came forward with a story claiming that she exchanged salacious messages with Smart over Instagram. She claims to have screen shots of their alleged chats as well as “naked images of Casper Smart."

A third source tells People.com that Lopez and Smart are still together — for the moment. "She is excited about where her life is right now," says the friend. "Her new single ['First Love'] is on fire, and her album is about to drop, and she has movies and hit TV shows [The Fosters] that she’s producing. She couldn't be in better shape professionally. Personally, it’s a bit more tricky."

The source adds, "Put it this way, they were having problems before the sexting. You do the math."

here's jennifer, slaying a bit during her Bronx concert doing the Dance Again dance break without capser. they done.