Julian has come a long way for Kim. What he has become is something he could never do for any past love- including Alexis. Kim was the one woman who was able to get Julian to leave the mob life behind and do right by Kim.
Their relationship seems to be one sided. Kim even had to give Julian an entirely new persona in order to accept him. Julian changed his entire life for her, all while she has been pining for Drew. When referring to her encounter with Franco, Kim tells Julian, “It was like I was reconnecting with Oscar’s Father.” Julian knew right then and there that Drew has been what she has really wanted this entire time. He also came to the realization that he gave up his old life for her. “Yeah of course you want that, you want him. Why would you want the guy who sold his restaurant to follow you to New York. Why would you want the guy who changed his life to become a better man for you? I mean, for us? Right?!” It looks as though there is no turning back for Julian “Charlie” and Kim. At this point, Kim is so far gone with her grief for Oscar, and her obsession with Drew, and Julian isn’t blind to the fact that he changed for Kim and now he isn’t what she wants.
Julian has nothing to lose in love and losing so much would be the perfect motivation to turn to his old ways. Is Julian a changed man forever, or will he always turn to the mob life when things fall apart?