By Mila Kunis's first ever kiss is said to have been with current boyfriend Ashton Kutcher.
The couple's former That 70's Show co-star Laura Prepon said that she "isn't surprised" that they are now an item.
When asked by Us Weekly if Kutcher was Kunis's first kiss, Prepon said: "He was, he was".
Kunis previously told People about their kiss: "I was like, 'Oh, he's so cute, it's the Calvin Klein model!'. Then I was like, 'I have to kiss him?' I was so nervous and uncomfortable. I had the biggest crush on him."
Kutcher added: "I'm so glad I didn't know that or it would've been too much pressure.
"I was so nervous. She acted so cool. She seemed as if she'd done it a thousand times. I was the one with the butterflies in my stomach. I mean, here's this little girl and I have to kiss her. It was nerve-racking."
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Kutcher and Kunis started dating earlier this year, but the pair have remained very private about their relationship.
They were recently named the fourth highest-earning celebrity couple of the past 12 months by Forbes.
View all of today's best celebrity pictures - photo gallery:Celebrity Pictures: 22/09/13 - 27/09/13
