Is Jennifer Lopez engaged to Casper Smart?

Jennifer Lopez has spent the last week with beau Casper Smart in Paris, believed by many to be the most romantic city in the world.

And while she has previously denied engagement rumors, Jennifer Lopez has once again prompted speculation regarding her relationship by sporting a very large rock on her ring finger.

Jennifer Lopez and her 25-year-old toyboy have been inseparable all week shopping, attending fashion shows and also a fundraiser for President Barack Obama’s re-election campaign.

But while she may be head over heels for her former back-up dancer, J Lo has insisted that her bling does not mean anything.

The popstar first sparked rumors that the pair was taking a big step forward in their relationship back in June when she was also photographed sporting a diamond sparkler on her ring finger.

But Jennifer Lopez was quick to deny the story on her website saying: “Rumors!!! Don’t be fooled by the rocks that I got,” quoting her 2002 hit, Jenny From the Block. “No engagement!”

But the couple may have been unable to resist the influence of the City of Romance and sources say Casper Smart is besotted with the 43-year-old: “He’s madly in love with her,” the insider told Us Weekly.

“It’s not just that she’s his lover, she’s also his best friend.”

Jennifer Lopez opened up about her new man to Vogue earlier this year saying: “He’s adorable. He really is [sweet]. He’s a good egg. I don’t want to talk about it too much. It’s my private thing.”

J Lo and Casper Smart first stepped out together in 2011, just a few months after her painful July split from crooner Marc Anthony.

Marc Anthony filed for divorce from Lopez, with whom she has four-year-old twins Max and Emme, in April after seven years of marriage.

Jennifer Lopez has been married three times, to Marc Anthony in 2004, Okani Noa in 1997 and Chris Judd in 2001.