you and ni-ki had a past back then. he's ur ex-boyfriend, and u broke up with him because u two were both young back then, and it didn't work out. the most awkward part is that he's now your classmate. you avoid him as u can because, even though it's been years, u still feel the awkwardness, and whenever u look at him, u remember ur past with him and how he begged for u to stay.