Jennifer Lopez, Casper Smart engagement rumors: J. Lo tells Casper to ditch Valentine's Day engagement plans?

Singer Jennifer Lopez allegedly called off her engagement to 26-year-old boyfriend, Casper Smart before it even happened.

According to the National Enquirer, Smart bought the Puerto Rican beauty a beautiful diamond ring and planned on a proposal on Valentine's Day until J.Lo overheard him talking about the rings details.

A source close to the couple told the magazine,  "With Valentine's Day right around the corner, Jennifer's suspicions were aroused - so she confronted Casper, asking bluntly if he was planning to propose. Casper denied all at first, but Jennifer warned him she was dead serious and needed to know the truth. She told him she loves him and their life together, but even though she believes in the institution of marriage, it hasn't worked out for her, so - faced with Casper's sudden move - she's just not sure she's ready to walk down the aislea fourth time. Casper was crushed! He feels that he, Jennifer and her kids have grown into a strong family unit, and had high hopes she'd just say 'yes' to his proposal. But J.Lo told him, 'You'd better cancel the ring order immediately!'"

Will J.Lo ever accept another proposal?