Scott Pilgrim Volume 5: Scott Pilgrim vs The Universe by Bryan Lee O'Malley
To win the hand of the lovely Ramona Flowers, he must defeat her seven Evil Ex-Boyfriends in video-game style battles.  This time out, he's got to fight the handsome twins Kyle and Ken Katayanagi who are even more awesome than Scott himself. More importantly, now that he and Ramona are cohabiting, they face danger from the jealousies and insecurities of couple hood.  Scott and Ramona both carry emotional baggage from their previous relationships. Scott cheated on one or more of his ex-girlfriends, who have names like Envy and Knives. As we know Ramona has several ex-boyfriends but dated the twins at the same time! 

The ending is rather bittersweet as Ramona just kind of pops out of existence.  It leaves you wondering how this will resolve. There is more mature feel to this series now as we see Scott become more of an adult especially with his relationships.  There is still that teen angst but thankfully not so prevalent.  A movie version of this series has been released but I think I'll wait until it comes out on cable or DVD.