"Dancing With The Stars" pro-dancer Derek Hough is not cool with watching his little sister Julianne Hough make out with Josh Duhamel.
The 24-year-old actress, who used to dance regularly on the ABC show, stars in the new film "Safe Haven" as a woman with a dark past who falls in love with a widower, played by Duhamel, after arriving in a North Carolina town. The film is based on a Nicholas Sparks novel and was released on February 14 -- Valentine's Day.
"I've already told Julianne that my dad and I won't be participating in watching any sort of love scene -- that we may or may not have to go to that bathroom at that point," Derek, 27, told OTRC.com at the "Save Haven" premiere in Los Angeles.
"Of course these guys will be giving her high fives going, 'Yeah! Josh Duhamel! All right!'" he added, referring to their mother and three sisters, who attended the event with him.
In one love scene, Julianne and Duhamel engage in a heavy makeout session against a tree (pictured above). The actress also filmed parts of the movie in a bikini.
When asked about Derek's comment, Julianne later joked to OTRC.com that she will "make" her brother and father watch the love scenes, adding: "That's punishment for being the older brother and father. It's like, 'Ha ha, watch that!'"
"I wouldn't want to see my little sister make out with anybody -- I don't blame them," Duhamel added.
Like her brother, Julianne rose to fame as a cast member of "Dancing With The Stars." She has since appeared as a guest dancer and has performed routines with her brother. The two have also performed music together. They were once part of a pop and dance trio called 2B1G with "Dancing With The Stars" dancer Mark Ballas and Derek recorded a duet with Julianne for her 2008 debut self-titled album.
Derek remains a regular on "Dancing With The Stars," while Julianne has in recent years concentrated on her acting career. She previously starred in three musical movies -- the 2010 movie "Burlesque," with Cher, Christina Aguilera and Kristen Bell and the 2011 films "Footloose," a remake of the 1984 cult classic, and "Rock of Ages," which flopped at the box office.
"Safe Haven," by Swedish director Lasse Hallstrom, marks Julianne's first drama film role.
"It's an amazing opportunity to do something that's so out of what people have discovered me as," the actress told OTRC.com. "This is strictly acting and to be able to get to work with Lasse Hallstrom, who really gets that out of you, it's amazing. It's all about second chances, this film, so it fits right in."
Duhamel, an alum of the soap opera "All My Children," starred with Bell in the romance movie "When In Rome" and has also appeared in films such as "Ramona and Beezus," "New Year's Eve" and "Transformers: Dark of the Moon."
Duhamel's wife Fergie of the Black Eyed Peas and Julianne's boyfriend and media mogul Ryan Seacrest of "American Idol" fame also attended the "Safe Haven" premiere.Reporting by George Pennacchio of KABC Television, which produces the entertainment show "On The Red Carpet" (check for local TV listings).