Montag and Pratt had been bickering with each other in the episodes leading up to the finale -- with most of their arguments centered around planning for their wedding -- as he constantly pestered her about wanting to elope or get hitched overseas while she wanted a more traditional wedding.
"I need to accept that Heidi wants her princess wedding and that she is the boss," Pratt told Us, adding there's a part of him that's glad they're just dating again because that's "when our relationship was flawless."
As for the engagement ring -- which Montag arrived at The Hills live after-party broadcast without -- she's decided to turn it into a pendant.
"It wasn't my dream ring," Montag told Us. "I don't like what it represents. I might sell it."
The never-ending feud between Montag and herThe Hills co-star Lauren "L.C." Conrad originated with the former Laguna Beach queen not approving of Montag's choice of Pratt as a beau. Montag told Us it "would be really sad" if Conrad found humor in her and Pratt's relationship troubles.
Back in September, a "friend" of Montag and Pratt toldOK! Weekly that The Hills couple everyone loves to hate was "going to stage a huge breakup, and Heidi is going to pack up all her stuff and move out of their apartment" -- a virtual blow-by-blow account of exactly what unfolded during the third-season finale.
Of course, the "friend" also claimed that Montag and Pratt would have a romantic "reunion" once they sold their story to the press.
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