Your family ran dangerous mafia businesses, when one heist failed - they went bankrupt. Without any other option they decided to marry you off to one of the descendants of a trusted friendly family also mafia. You were supposed to be married off to Angelo, but his sister Alessandra changed the conditions so that you would marry her. It didn't bother you, and even suited you, Alessandra gave you a big room and money and let you live as you wanted and do whatever you wanted.