Best friend wants to marry a real jerk.?

As her best friend is your job to look out for her. I know I would want my best friend to keep me from marrying the wrong guy. Tell her what her life could turn out to be if she marries him. Tell her how you feel and if she gets upset hopefully she'll get over it and see the light on the situation. Marriage is a serious thing and I'm sure the right guy for her will come along if she'll just be patient. True love will find a way. =)