Brandi Marshall has fans asking where she is after she didn’t show up in the Selling The OC season 3 trailer. However, her boyfriend, Sean Marshall, is certainly there, stirring up serious drama over rumors. When Selling The OC‘s season 3 trailer came out, there was one key cast member missing: Brandi Marshall. Many fans took to social media to ask where she is, just a month after she wrote a cryptic post. Selling The OC fans ask where Brandi isWhen Brandi Marshall didn’t make an appearance on Selling The OC’s season 3 trailer, social media went wild. One fan wrote, “Brandi messed with the wro…