Netflix & thrill

It’s not freaky to find a film that scares the pants off both of you — it’s natural (and sexy), experts say

IF someone yelling “Boo!” makes you want to hook up with your boo, you’re not alone.

Experts say shriek-inducing horror film scenes — such as Clarice (Jodie Foster) unknowingly coming face to face with serial killer Buffalo Bill in a dark room in “Silence of the Lambs” — can make you feel horny.

According to Lia Holmgren, a Manhattanbased intimacy and relationship coach, it’s a matter of simple human instinct to want to be close to another person when you’re scared.

“This phenomenon is [from] prehistoric times, when we needed to bond — especially in dangerous situations — and increase the chances for survival,” she tells The Post.

Holmgren cites a study conducted in Canada in the 1970s, in which men crossing a precarious 450-foot suspension bridge in British Columbia showed greater attraction to a woman standing nearby than did men who had traversed a more sturdy bridge. The researchers’ conclusion: a misattribution of arousal.

“So when we’re watching horror movies, we have a state of fear and anxiety, and it makes us have stronger feelings of sexual attraction toward other people,” says Holmgren.

Any time you feel frightened, there’s an increase in the hormones adrenaline and cortisol, and blood is pumped more forcefully to muscles and extremities — just like it is when you’re feeling randy.

“When we’re scared, our blood naturally is pulled to our extremities, so that we can run faster,” Dr. Holly Richmond, a somatic psychologist and sex therapist, told womenfocused Web site Refinery29. “When we’re turned on, the blood flows to our genitals . . . cortisol levels go up both when we’re scared, and when we’re aroused, specifically in situations with new partners or when there’s a novel aspect to sex.”

And if you’ve had enough of the fright fest, Holmgren adds, sex can help undo the sensations of fear.

“It’s a good stress release as well,” she says.