Well I guess for me the fact that it's Superman
doing it precludes the scene from having any kind of creepy undertone to it. He's coming from a much more pure and innocent place than that, and doesn't feel to me at all like just another typical, spurned ex-boyfriend there.
I'm not saying it was the right thing for him to do, I just don't get the same "creepy vibe" that others do. And clearly Singer didn't either.