You know I think it's the kissing that's bothering me. If she'd just torn his shirt off all primal-like with a predatory come-and-get-it expression, that'd be one thing. Sex is sex and has all kinds of connotations. The primary connotation of kissing, though, is affection and intimacy. Random hulk-from-the-future having sex with a guy who she doesn't know from Adam for the sake of her species I can handle. Random hulk-from-the-future showing affection and genuine interest in a guy she doesn't know from Adam would creep me out even if it wasn't Norman "Exponentially More Creepy-Making" Osborn.