"They are on a break," one source tells Us. "The relationship got too heavy and Khloe needed to take a step back."
Another insider says the Moroccan-born musician, 29, was too "needy" for the reality star, 30. "It grated on her that he became so dependent on her," the pal tells Us.
It didn't help, of course, that her family never really warmed to her beau. Kardashian matriarch Kris Jenner "did not approve and told Khloe all the time," the first insider says. And she wasn't the only one with reservations; a friend previously told Us that sister Kim Kardashian-West and stepdad Bruce Jenner were "very skeptical" of the rapper and worried he was using her for fame.