Boyfriend or Girlfriend

We searched about boyfriend or girlfriend in Prefectural University of Kumamoto.
A lot of students had have boyfriend or girlfriend, but they don't have.
I think they couldn't get along well, because they had never had boyfriend or girlfriend then.
They didn't know how they get along well, so they separated from their loved parson.
Power Point is too difficult for me to use well, but I like that explanation my friends about it.