Niki was your jealousy boyfriend.

One day you come with him to his volleyball practice, while he was practicing you met a guy named Ethan, Ethan and you started talking and that caught Niki's attention. Minutes later a ball came flying towards Ethan good thing it didn't hit him, I saw Niki being scolded by his coach saying "Are you crazy?! You almost hit someone with that spike! ". I saw niki's eyes glaring at me with jealousy.