Justin Bieber may have 99 problems, but according to TMZ, Selena Gomez ain't one. The gossip site says the two are back together. Of course, there's a big catch -- Justin has to stop acting like a spoiled brat. No more spitting in neighbors' faces, speeding around the neighborhood, having his goons harass photographers or peeing in mop buckets. And he's apparently agreed -- although he has a long history of promising to behave better and then doing more stupid stuff. Justin and Selena broke up right around the new year, when they had a fight over his flirting with underwear models at the Victoria's Secret Fashion Show. This has been a schizophrenic relationship: Every month the rumors have been that they’re getting serious or that they’re falling apart.