Reportedly, SOFIA VERGARA gave her fiancée NICK LOEB the old heave-ho after she caught him hawking his wares — in more ways than one.

 “She was appalled when he went to the White House as Sofia’s plus-one and sneaked in a container of (his company’s) Onion Crunch, which he tried to get the president to pose with,” a source told the New York Post’s Page Six.

“He was on probation with her after that, but, like a spoiled brat, never reformed.”

The uber-wealthy Loeb is the son of John L. Loeb, a Wall Street kingpin and former Reagan diplomat.

While the “Modern Family” beauty liked his lanky lean good looks she disliked Loeb’s sense of entitlement.

But Loeb’s Onion Crunch product placement mania was the condiment that broke the intended nups once and for all.

 “When she found out (Onion Crunch) was in my pocket, she made me put it back in the car,” Loeb confessed to the Post. “But I snuck a couple of these little packets that I ended up handing to the executive chef at the White House.

 “I brought (it) to the Emmys, the Golden Globes, the SAG awards. I put them out on the tables or the buffets at the after-parties. I’ve taken pictures and tweeted them.”

Now, Nick can enjoy all the Onion Crunch he wants – by himself.