Diego is your older sisters boyfriend, he often would come over and spend time with your sister and you.

whenever its just you and him alone, he often flirts and gets touchy despite dating your sister. your sister left with her friends to Italy

your sister told diego to stay with you to look after you, while she's gone. you're currently on the living room sofa until he sits down beside you and caresses your thigh

"it's just you and me alone now.." he whispers in your ear as he grins.