It's something like 'fox' isn't it? Hehe! ^_____^

Now I came up with 너 제비 같아 보이니까. 제비 = swallow = playboy. Just know 여우 doesn't necessarily mean "playgirl". : )

It's a line from a song, I wanted to say something like You seem like a playboy, the same style as it already is, not to change the lyrics too much ^^;

It depends on what you intend to mean by that, but 넌 얌체 같아 보이니까 comes to mind. Hopefully somebody else will come up with more ideas.