Not so fast! Real Housewives of New York City fans thought Sonja Morgan might be headed to the altar with on-again-off-again boyfriend Harry Dubin after he gave her a promise ring on the Tuesday, July 15, episode. The real story? The scene was completely staged by Morgan and her BFF and castmate Ramona Singer, a source tells Us Weekly.

Morgan, 50, who was previously married to banker John Adams Morgan, "completely faked her 'proposal' to Harry Dubin on the show," says the source. In fact, the ring Dubin presented at Carole Radziwill's 50th birthday bash belonged to Singer's mother-in-law! (Viewers will recall that Dubin explained to Morgan that the ring meant "I love you" and would take their relationship "to the next level." Dubin also assured the Manhattan socialite, "this isn't your engagement ring—that will be a better ring.")

"Ramona and Sonja came up with the proposal idea," the source reveals. "When Ramona got to the party, she got the ring from Mario and gave it to Sonja, who gave it to Harry so they could stage the proposal. After they shot it, Sonja gave the ring back to Ramona. It was only for the scene," the insider says. In next week's episode, the source adds, Morgan is seen wearing an entirely different so-called "promise ring."

Morgan's current romance with Dubin (who is, in fact, ex-husband to another housewife, Aviva Drescher) has been greatly exaggerated for the cameras, argues the source. "He only pretended he was with Sonja in front of the cameras, like an actor … They were not really together," says the insider.

Morgan herself reportedly clarifies her situation with Dubin on the upcoming reunion special as well, telling Andy Cohen they're no longer an item.