We used a questionnaire to obtain data about 664 university students’ amative behavior in a campus. Then we studied dissemination rules of university students’ amative behavior on campus social network. We found the amative behavior changes over time by focusing on the analysis of love group’s influence to single people and single group’s affected degree. Meanwhile, we compared the influence of single and multiple social relationships to the spread of amative behavior, and the result shows diversity of social relationships is a significant effect factor in spreading process.