'Bachelorette' Ali and Roberto plan spring nuptials

"Bachelorette" Ali Fedotowsky and her fiance, Roberto Martinez, have already begun making plans for their spring wedding - and the bride-to-be assures us "nothing weird, nothing terrible" will happen to them, a la the most recent "Bachelor" couple, Jake Pavelka and Vienna Girardi.

The couple evidently solidified their decision somewhere between ABC's live "After the Rose Special" Monday night and "Jimmy Kimmel Live" the same night. Martinez, 26, an insurance agent living in Charleston, S.C., originally said he wanted a spring wedding, but Fedotowsky, 25, an advertising account manager living in San Francisco, said she preferred waiting till summer.

And if the TV-produced weddings of some previous reality-show couples are any indication, it won't be a small event. "My mom wants 700 people at the wedding," Martinez told Kimmel.

Fedotowsky had sent her other remaining suitor, Chris Lambton, home the day before the final-rose ceremony on the South Pacific island of Bora Bora. "I feel like you have all the qualities you want in somebody," she told him, but then added, "I'm in love with somebody else. I have to let you go here, and not wait till tomorrow. This wasn't an easy decision," she assured him. "It was really hard. I just didn't want to put you through [this] tomorrow."

Lambton, 33, a Massachusetts landscaper, told People magazine in an interview Tuesday, "She made the right choice for her and me as well," and added "I was blown away by how gracious she was doing that. If I had waited that whole night, got in my suit, picked out a ring and gone through all of that and gotten rejected the next day when she had her mind made up already. . . . I think that shows what an amazing person Ali really is."

"I love Roberto," Fedotowsky said on the finale. "I love him. I've never ever in my whole life felt this good in a relationship."

Martinez proposed with a handcrafted, 3.03-carat, Asscher-cut diamond ring from jeweler Neil Lane. Accented with 184 round-cut diamonds, its estimated value, says People, is $50,000.