The two costarred in the 1986 movie “River’s Edge.”

I maneuvered between him and the open shower curtain, water spraying my back," she wrote.

“His beautiful neck was right there, so close I could lick it, so I did.

Ione Skye, Keanu Reeves,

Island Pictures/ Everett

I zeroed in on his beautiful throat, sucking and making out with it.

He made a low, growly noise and I felt my stomach turn nicely.

‘Oh,’ I heard myself say.

Ione Skye wrote about her teen crush on Keanu Reeves

Ione Skye wrote about her teen crush on Keanu Reeves.Gary Gershoff/Getty; Steve Granitz/FilmMagic

“I broke out with a quick, shocked laugh.

“‘No, don’t be,’ said Keanu, releasing my wrist.

We were still stuck together, breathing hard.

I pressed my face, red from the kiss and now embarrassment, into his chest.”

Reeves, who was six years older, treated her kindly.

“‘Let me, ah, get you a dry shirt,'” he said to her.

“Damn,” Skye thought.

“Even the way he’d rejected me was charming.”

Skye said things were “only a little awkward on set the next day.

Without saying anything, Keanu let me know he didn’t blame me for trying.”

The encounter outside the shower followed several others that made her heart race.

In one, they were working together on a sex scene, which got off to an awkward start.

He told her he had forgotten and had eaten a few bites of raw onion beforehand.

Afterward, they “pulled apart, a little bashful, a little breathless.

That visit ended abruptly, too, when Reeves suddenly stopped kissing her and offered to drive her home.

EW has reached out to Reeves’ rep for comment.

Say Everything: A Memoiris in bookstores now.