This article explores social media relationships between undergraduates and their professors. It addresses social media efficacy’s and social media privacy’s impact on students’ trust in both their professors and university. An online survey of 448 business students found that students who are in social media relationships with professors are more concerned about their own social media privacy and that these students are less likely to trust their professors and the university. When it comes to perceptions of professor and university trust, students’ perceptions of social media privacy are more important than their social media connections with professors. Implications are discussed.