Jingar Duggar will soon be the third Duggar daughter to marry. Recently, her family announced that her boyfriend, Jeremy Vuolo, has proposed.

Sisters Jill Dillard and Jessa Seewald were the first two to marry Derick Dillard and Ben Seewald two years ago.

But why is the "19 Kids & Counting" star, Jana, still single? Apparently, she just does not want to marry till she finds her own Mr. Right. Jana, the eldest daughter of Jim Bob and Michelle Duggar, has turned 26 but is still not even engaged. Even though a lot of suitors have approached her, she has not located the right man.

Jana is whispered to have been associated with a number of potential suitors, including a friend, Zach Bates, and Christian football player Tim Tebow, who was stated to have been in a secret courtship with her last year. It was her cousin Amy Duggar declared that the two had never met!

"I don't really know what the next five years look like," Jana said. "I guess in some ways [I've] got hopes and dreams like, 'Well, maybe I'll meet the one, and get married and have kids.'" She added: "I'm not just out to get married to the first one that comes along. I mean, sometimes it can be tempting. ... [Especially] in those moments where your siblings, who are married and have little ones, are going out on dates and doing their things."

As she says that she is sure she knows what she wants, she hopes that her boyfriend would be a "hard-working guy versus an office job guy," with some "dirt under the nails."

On the other hand, the "Bringing Up Bates" star, Zach, was denied permission to court Jana by her father.

But apart from that, she hadn't been attracted to Zach in the first place. "She wasn't attracted to him and just didn't see it working out," the source said, adding that Jana is "extremely picky" with her suitors. "She wants the real deal and won't settle for less. She's more goal-orientated that some of her siblings. For her, it's not just about being married."