Most Helpful Girl
Yes nice guys do come last; but so do bad boys.
When people say "nice guys come last", they are just saying that in terms of instant visual/sexual attraction and desperation, nice guys are the last ones girls will turn to for this kind of fun because the nice guys are much more modest and don't like to give in easily.
However, bad boys can also come last. When it comes to honest, truthful, steady relationships built from emotional attachment, bad boys can often come last because they are more viewed as flings rather than someone a girl can be committed too and trust.
So nice guys come last is just one half of it.