Kirstie Alley has a message for men over 45: Stop being boring!

It's been a year since Kirstie Alley announced her 50-pound weight loss and she's kept it off! Now, she might be celebrating her milestone with a younger man.

The 64-year-old Jenny Craig spokesperson knows that the hardest part of any weight-loss journey is keeping it off. While she admits that in the past she has struggled with yo-yo dieting, she says she's proud of where she's at now.

WATCH: Kirstie Alley Shows Off 50-Pound Weight Loss

"I think I'm healthy," Alley told ET. "I'm strong. I get tested regularly ... It wasn't like I gained 600 pounds and then I lost it. It's probably not the healthiest thing in the world, but I did it."

One of the ways she did it was through learning proper portion control.

See photos of Alley through the years:

"I go into restaurants and I watch other people order and basically they're ordering a portion for four people," she said. "We waste so much food in this country, and we serve so much food, and you lose track of what a real portion is."

WATCH: Kirstie Alley Chopped Off All Her Hair Because of Jennifer Lawrence

Alley praised the Jenny Craig meals for getting her accustomed to eating reasonable servings.

"They're really yummy and you go, 'Oh! A meal is eight bites not 80,'" she said.

Her weight-loss objectives might be easier to attain than her relationship goals. Alley admitted that she was "not impressed" by her dating pool.

"I wanted to say something to men over 45. Don't be so freaking boring!" she said. "Don't have the life already sucked out of you. All it does is leave women to date young men and be really embarrassed, because we are dating guys in tank tops. I want some men around my age that aren't boring, and act like they are tired."

WATCH: Valerie Bertinelli Talks Ditching the Scale

The latest Jenny Craig commercial features a mini Cheers reunion, as Alley shares the small screen with her former co-stars, George Wendt and John Ratzenberger. The ad campaign led us to wonder whether a reboot could be in the works.

"I would die to do a Cheers reunion as long as it's not taken up as a subject. It really just has to be another show," Alley told ET. "It can't be a special moment or Fantasy Island. Do you know what I mean?"