Paolo is initially a member of both Partihaus and Powerhouse, due to the fact that he is both a raver and a jock. Paolo's first appearance is when he meets Sabrina at a bar in Part 2. Later, he is invited to the house, where he meets Sabrina's younger sister, Valentina. With the help of a mod which allows Teen/Adult relationships, Valentina becomes infatuated with Paolo and tries very hard to impress him. When Paolo next visits he accidentally sees Valentina in the shower, and appears to enjoy it. The pair become Good Friends; Paolo asks Valentina to be his date to a Dance Party at the Von Haunt Estate, which she accepts. Paolo and Valentina have their First Kiss and run through the hedge maze to WooHoo in a bush - then the night is cut short by Sabrina's arrival. Following the fateful Dance Party, they become Best Friends and make their relationship official. Paolo moves in with Sabrina and Valentina.
Paolo proposes to Valentina once she has finally Aged Up. She says yes; the couple have a romantic photo shoot and get married at the Chalet Gardens. Their son Leo is born shortly after. Valentina's mother Yolanda York comes to stay with the family and, although it seems that she finds Paolo attractive, he is a frequent victim to her Hotheadedness and they have a mutual dislike for one another. Yolanda once accidentally saw Paolo naked.
When Child-aged Leo gets into a fight, Paolo is thrilled, and goes to give him some tips on how to win his next fight.