It's back on for Jennifer Lopez and Marc Anthony!

The couple, who were married for seven years, shared a steamy kiss onstage at the Latin Grammy Awards, and sources reveal exclusively to Life & Style it wasn't just for show.

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"Jennifer knows that Marc was the love of her life,” the insider says, adding that the duo's eight-year-old twins Max and Emme have kept them close since their split in 2011.

With Marc separating from his wife of two years Shannon De Lima and Jennifer breaking up with longtime boyfriend Casper Smart in August, the Puerto Rican singers are both single at the same time, and Marc is already talking marriage.

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"Marc will propose,” predicts the insider, “and when he does, Jennifer will say yes."

For more on your favorite celebrities, pick up the latest issue of Life & Style, on newsstands now! For more of JLo and Marc's cutest moments, check out the gallery below!