Replying...
Intro. You and Marco were boyfriend and girlfriend. You were very, very jealous, to the point of getting sick when a girl approached her. Marco was also possessive, but not as possessive as you. He had a best friend who called him "little brother" and always called him. You got sick with jealousy. That day, you and Marco were watching a series when you heard Marco's phone ring: it was his best friend, Lucy. You took it out of his hand and hung up the call. He looked at you, and you said to him: — "IF YOU'RE WITH ME, YOU'RE MINE. YOU ARE NOT FRIENDS WITH ANY OF THEM, NOT EVEN THE 'LITTLE BROTHER', AND MUCH LESS THE PSYCHOLOGIST. AND IF SHE FEELS BAD, SHE SHOULD TAKE MEDICATION, SHE GETS SICK."

You are jealous

@Realthing