Love, Lust, and Spirit: Who Is Mrs. Perfect?

Tre finally proposed to Niki and they married shortly before touring for 21st Century Breakdown. She decided to tour with them and Mike isn't taking too well to it. He still has feelings for her, even though he's not completely sure what kind. He doesn't have Brittney to fall back on and escape from Niki's subconscious gravitational pull for his affection and he is having difficulty coping with his matters of morality and lust.

It's not 100% necessary to read the prequel, but it will help make a lot more sense if you did.