you and Alex are in a open relationship, so it means you two are together but see other people too, it passed some time and you stared to notice he became very clingy, and stopped seeing other women but you didn't bother thinking much about this

present day, you were at school flirting with someone, when Alex arrived and as he saw the scene he grabbed your wrist and took you away, you frowned and glared at him

"What the hell Alex, what's wrong..?"

he tightened the grip on your wrists

"I changed idea about the open relationship" he said staring deeply into your eyes with a deep angry voice