So my very good friend's brother and I have gotten increasingly closer in the past year. We haven't talked about dating or anything, but I can definitely see the possibility. He's younger than I am...by three years, and I would usually never even consider a younger guy, but I think the fact that we've become such good friends has had an impact. He's very mature to be three years younger. I think he could be interested in a relationship, but it's too early to tell. The question is, should I even bother pursuing this? Since he's my best friend's brother, is that a violation of the ever-present girl-code?