Amanda Seyfried isn't afraid to get intimate on set! The blonde beauty covers the April issue of W magazine, where she opens up about filming sex scenes and kissing Megan Fox. "Sex scenes are great," the 28-year-old star tells the mag. "A lot of my costars have been sexy guys my age who are really respectful and cool. So, why not? I'm not going to pretend it's not fun."Well, with former costars like Channing Tatum and Justin Timberlake we can see why the blonde beauty hasn't had a problem with any of her sex scenes ... yet. While she's had some great love scenes with guys, shell never forget that kiss with Fox in "Jennifer's Body." "We kissed really well together," Seyfried says. "We have similar kissing styles! If I watch that scene, it’s actually really sexy…" she confesses. The "Les Miserables" actress also says she's not against dating costars.