Ashlee: Marriage 'Not On My Mind'

She's happy with beau Braxton Olita, but Simpson says she won't marry young like Jessica

Ashlee Simpson has learned to slow down and relax thanks to her beau, Braxton Olita – but says she’s in no rush to marry young like her big sister, Jessica.

“I’m a lot more peaceful and chilled out,” the singer tells Teen People of her life since she began dating Olita. “I honestly couldn’t be more content.”

Simpson, Teen People’s June/July cover girl and one of its Hottest Stars Under 25, tells the magazine she was friends with Olita, the 20-year-old Hawaii native who plays guitar in her band, before their relationship turned romantic.

“He’s the yin to my yang; people call him my ‘Little Buddha,’ ” she says. “When he comes around, everything changes. Braxton has taught me a lot.”

Still, Simpson, 21, says she’s not looking to follow in big sister Jessica’s footsteps and get married at a young age. (Jessica was 21 when she tied the knot with Nick Lachey; they split last year.)

“I’ve watched Jessica go through a really hard time. Marriage is definitely not on my mind,” she says. “Sometimes things don’t work out the way you thought they would. I’m absolutely in love and in a committed relationship, but we live day-to-day. There’s a lot of growing you do in your twenties, and I definitely want to wait until my late twenties or thirties or whenever the time is right.”

Next up, Simpson will kick off her summer tour on May 6 in West Palm Beach, Fla. And in the future, she hopes to pursue acting. “I’m reading scripts and looking at films that are more Quentin Tarantino-style,” she says. “I’d like to do a really great movie by the time I’m 25.”

To read more about Ashlee and other 25 Hottest Stars Under 25, visit TeenPeople.com.