InTouch magazine is reporting that Casey Aldridge, Jamie Lynn Spear’s fiance, cheated on her while she was pregnant.

The other woman, Kelli Dawson, 28 years-old, claims that she and Casey were sleeping together while Jaime Lynn was six months pregnant with his child.

“We were both really attracted to each other,” Kelli reveals. “He totally instigated it and pursued me. His friends would tell me that he liked me, that he thought I was pretty.”

InTouch reports:

“The pair didn’t bother to hide their relationship.“ Kelli and Casey have been a couple on and off for a few years,” confirms Jason Alexander, Britney Spears’ first husband and a native of nearby Kentwood, La. “They were a really tight couple, but I think it was hard for Kelli, having Jamie Lynn in the picture.”

Kelli says she and Casey stopped sleeping together a few months before Jamie Lynn gave birth to her daughter, Maddie. “It just didn’t feel right,” she explains. “He had to deal with the baby coming, and it had to stop.” She says the last time the couple had sex together was in March but “even after we stopped having sex, we would still kiss occasionally.”

Jamie Lynn sure picked a winner.

OK! magazine is reporting that new parents Jamie Lynn Spears, age 17, and Casey Aldridge, age 19, are planning to wed this fall or sometime before the years end.

Jamie Lynn, not looking to have a big luxurious wedding, will have the nuptials in the backyard of her new house in Liberty, Mississippi, which is only 30 minutes from her home town Kentwood, Louisiana.

A friend told OK!: “She loves everything about the area where she lives. She’s not going to get married at some luxury resort in the Caribbean or a hotel in Beverly Hills. Her own backyard with just the people who matter most is more Jamie Lynn’s style.”

With the big day is coming closer, the friend said Jamie Lynn has already “down to her pre-pregnancy weight” adding that “She has the cutest figure!”

Britney will be her made of honor and Casey’s sister Ashley will be her bridesmaid. Jamie Lynn and Casey will also involve little Maddie on the wedding, having her carried into the ceremony in a basket decorated with flowers by their mothers.

The magazine promises “complete, exclusive details - from the dress to the hair to the wedding bands - of Jamie Lynn’s wedding plans” on its new issue, on newsstands Thursday, July 31.

Jamie Lynn Spears is not ready to be a mother at such a young age and sources say that she isn’t ready to be married young either.

Jamie Lynn and Casey Aldridge got engaged soon after they found out they were pregnant. But sources are saying that the whole marriage idea has been put to a halt due to their constant fighting.

“Jamie Lynn and Casey have been fighting non-stop about everything, from what to name the baby to what to eat for dinner. And now she’s called off their wedding plans.”

Even Jamie Spears left his sick daughter, Britney, in LA to come home to Louisinna to be with his youngest, Jamie Lynn.

“Jamie Lynn, Jamie and her mom are all staying at Serenity [the Spears family estate in Kentwood, Louisiana] right now. They’ve been busy decorating the baby nursery.”Jamie Lynn realizes that she already made the mistake of getting pregnant and she feels that she shouldn’t get married just for the child’s sake. It’s definitively not a good idea to raise a child in a home where the parents are constantly bickering and having real marital problems.

A celebrity photographer has been arrested for allegedly stalking Jamie Lynn Spears and her fiance, Casey Aldridge, in a small town in Mississippi.

Edwin W. Merino, 30, of Los Angeles, posted $1,143 bond on Tuesday. He is scheduled to appear in court next week.

Authorities in Liberty, Mississippi claimed that Merino wouldn’t leave Spears and Aldridge alone.

Merino denied the accusations in a phone interview Wednesday with The Associated Press. He said that he was about 200 feet away from the couple using a long lens when he was arrested at a gas station.

“I just think since I was the only one there, it was just easier for them to single me out,” he said.

In the end, Merino said the trip was a waste.“The one picture I got was kind of by luck. I got lucky when I saw them at Wal-Mart when I was buying deodorant.”

Merino has worked as a celebrity photographer for five years. He was one of the paparazzi who snared pictures of Jamie Lynn Spears’ older sister, Britney, without underwear.

Mom-to-be, Jamie Lynn Spears, has apparently been sporting some really nice shiny jewelry that appears to be an engagement ring from boyfriend Casey Aldridge.

Spears, 16, has been flashing her new ring to all her friends and family in Louisianan and Mississippi, a source close to the family tells PEOPLE.

“She’s got an engagement ring,” the source says. “She’s been showing it off, talking about it.”

Spears and Aldridge are expecting their baby this summer. No official word yet on a wedding date for the couple.

I don’t know if I like the idea of Jamie Lynn getting married at such a young age. I think she needs to wait awhile before she jumps into any thing too quickly, again. I mean she could be a mom and a divorcee all before she’s 21. What do you think?