Desiree Hartsock's brother, Nate Hartsock, is back and bringing more drama, in the upcoming episode of The Bachelorette on Monday.

(Fans may recall he was was the reason she was eliminated in Season 17 of The Bachelor with Sean Lowe.)

In the preview video below, Desiree reveals she must see her brother before her rose ceremony with the last four suitors. She admits in the clip that Nate "ruined" it for her after he met Sean Lowe on the hometown episode of The Bachelor. In the teaser, Nate seems anxious to meet Desiree's remaining suitors. The overprotective sibling tells her he'd like to "get in their heads."

He also expressed concern about meeting someone through a reality show, adding that it will not turn out well.

An insider close to the Hartsock brother and sister team shared a spoiler about their meeting. According to the source, Desiree was "petrified" about Nate meeting her final four suitors because she was concerned that Nate would turn them off.

"She didn't want him scaring anyone else out of her life," the insider told Wet Paint. "She didn't want Nate making it worse. She was really concerned."

In the end, everything turns out well when Desiree realizes that her brother only wants what is best for her.

"At the end of the day, he only wants to see her happy with a guy who's worthy of her," the source explained. "He came back on the show to support her, not to cause problems."

Lowe explained in his blog that Nate was the reason why he eliminated Desiree in The Bachelor Season 17 during the hometown Visit episode that aired February 18. Nate upset Lowe when he accused him of being a "playboy."

"I'm still confused as to what led her brother to call me a playboy and a fake," Lowe wrote on his blog for People at the time. "He decided to attack my character and integrity, and I honestly don't know what provoked him...Her brother didn't affect the way I looked at Des, but it did make me wonder if I could be in the same family as her brother."

Episode 8 of The Bachelorette Season 9 will premiere on Monday, July 15 at 8 p.m. EST/& Central on ABC

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The Bachelorette season 9, The Bachelorette 2013, The Bachelorette 9