As Life & Style previously reported, Jennifer Lopez's relationship with boyfriend Casper Smart has hit an all-time low — and the singer's friendship with ex-husband Marc Anthony is partly to blame!

“Casper’s jealous that J. Lo is still friends with Marc,” a source tells Life & Style of the former couple, who recently posed for a picture with Casper and Marc's current wife, Shannon De Lima.

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The 29-year-old dancer is also angry that his plans to have a baby with Jen, 47, were put on hold because of her career.

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“J. Lo admits that she can’t give her all to Casper right now because she has been so busy," an insider reveals, “but she wants Casper to stick around.”

For more on the duo’s crumbling romance, pick up the latest issue of Life & Style, on newsstands now! And scroll through the gallery below to see their cutest moments together.