"When her grandfather was dying, everyone was there for her. People flew to Florida to be with her, but Jai didn't," the source said. "Ariana just felt he wasn't there like he should have been."
Big Sean was previously engaged to "Glee" star Naya Rivera but they split up in April. Soon thereafter Naya married actor Ryan Dorsey in Mexico.
So if Big Sean married Ariana Grande, would they become a Venti couple?
* According to cambio.com, new besties Lorde and Taylor Swift took a cooking class together in Rhode Island over the weekend.
The culinary adventure was documented on Instagram.
And the oil said to the vinegar, "We are never, ever, ever, getting back together."
* The president of the U.N.'s top human-rights body says that the commission on possible violations of the rules of war in Gaza is "operational" despite the decision by George Clooney's fiancee Amal Alamuddin to pull out of the panel.
Amal decided she couldn't accept the role a few hours after she was appointed as one of three commissioners, said Gabon Ambassador Baudelaire Ndong Ella.
If you were marrying George Clooney, would you want to spend all day thinking about Gaza?
* TMZ.com reports that Kim, Khloe and Kourtney Kardashian believe that the person who keeps pilfering their pricey stuff works on their "reality" show and they are refusing to start production on Season 10 until the thief is caught.
The three thefts - more than 300G taken from three Kardashian residences - appear to be inside jobs, although no one is looking at North West.
All that baby food and how could the kid not have sticky fingers?
Now Triple K want producers to force the crew to take lie-detector tests.
Dear K Krook: We'll hide you out in Philly and never have to watch that show again. It's a win-win for America.
- Daily News wire services
contributed to this report.
On Twitter: @DNTattle