I don't think Shravan would have been in a relationship b4 since he has pretty negative views about women and a relationship needs trust.
M not sure about Sumo..its possible that she could have been in a relationship in college and then she got to know about the debt and decided to concentrate on that.
Shravan loved Sumo but she didn't feel the same for him b4 so I think its possible..
What do u guys think?