Eww, Jessica Alba, eww! She messed up one of the kissing scenes in her latest film, Valentine’s Day, when her disgusting chewing gum caught on her lip as she was about to kiss Ashton Kutcher! "Whenever I'm nervous, I have gum on the roof of my mouth. So I had it and my mouth got dry because I was nervous, because I knew I was going to kiss Ashton. It got powdery and it got on my lip during my close-up. He called me out in front of the whole crew. It was really embarrassing," she told the San Francisco Chronicle. This SO explains Ashton Kutcher’s “I hate Valentine’s Day” quote.PHOTO CREDIT: topnews.in