A student at Concordia St. Paul is demanding protections for gays and lesbians after she said her relationship with another woman cost her a leadership role with a student-led worship group. Nikki Hagan, 19, said the student president of Concordia’s “908 Student Ministry” asked her to resign her informal post as the group’s message coordinator soon after she posted on Facebook in November that she is bisexual and dating a woman. University President Tom Ries said homosexuality is “an ongoing topic on our campus,” but Hagan’s story has given the issue greater prominence than in years past.