Fromm said that one day, when he opened up the floor for questions, a freshman girl asked him what would be the best way to entice someone to go to church.
"I can't exactly answer that because I don't go to church." Fromm said to the girl. He told the class he was an atheist and that he had never shared that with anyone.
After that, rumors started to spread around campus that Fromm was an atheist and that he hated Christians, said Brandon McGinnis, Fromm's former roommate and editor-in-chief of the Beacon Bolt.
Some students even reached out to Fromm's adviser because they were "concerned and surprised" that he was an atheist, McGinnis said.
Fromm's adviser met with him to address the rumors about him being an atheist.
"Eric was upset people were questioning the way they were," McGinnis told ABC News.
"I didn't feel free," Fromm said. "At first I felt at home, but when a person starts shunning or judging me because these misconceptions started happening then I didn't feel free."
But it was only two weeks ago when Fromm decide to explain himself. He chose to do it publicly so he could reach a larger audience, so he wouldn't have to explain himself to everyone who asked. Also, he published his e-mail and listed facts about his life and how he became an atheist.
"I was an atheist long before I came to NCU. I was baptized Lutheran, and raised Methodist, but as time went on I slowly came to the conclusion that God wasn't real. For me, church was an empty ritual that I participated in so I could see friends, scripture was largely mythological, and Jesus was a great moral teacher, but he wasn't God," said Fromm's post.
McGinnis said Fromm asked him to help him write the story, and even though they knew they might receive backlash about the piece, they decided to publish it anyway.
"We knew that there was going to be a mix of responses," McGinnis said. "He [Fromm] was getting prepared to defend himself and defend his position. He felt he was being misrepresented."
However, he didn't have to.
"The surprising thing for the both of us was that the school and the students were remarkably supportive," McGinnis said. "I think Christian identity but willingness to accept those from a different background, I think that's the precise balance."
When asked about Fromm's role as the president of the study body at NCU, Jones also said the school doesn't plan to ask him to step down because of his article.
"Eric is an exemplary student, a good friend, a thorough academic, and when it comes to credibility as the ASNCU president he is the best qualified to fill that position," McGinnis told ABC News.
Fromm said he was also shocked to see how many people online have reached out to him with their own personal stories and also to tell him he was an inspiration to them. He said thanks to his post, people were telling him they had hope they could be accepted for not believing in God.
"I have learned so many things about people's struggles," Fromm said. "I never really knew that people could struggle, that an atheist could feel this struggle.
"It makes me very happy that I can change people this way, and it's not insulting any religion, and it's not destroying who the person is," he said.
Fromm told ABC News he's still trying to figure out why this story went viral.
"Atheist president of a Christian school," Fromm said. "When people look at this it makes no sense to them."