Jessica Biel and Justin Timberlake’s relationship could be heading for splitsville, according to sources close the couple. While reps for both stars insist everything’s peachy in paradise, friends say that’s not quite the whole story. “Things are not going as smoothly as [they] would want people to think they are,” one confidant of Jessica told the Chicago Sun-Times. A friend of JT, meanwhile, claims: “I can always sense when Justin is beginning to get itchy in a relationship… While he’s still very public about being seen with Jessica, it’s interesting… He hardly talks about her when she’s not around.” “The same thing happened with [ex-girlfriend] Cameron [Diaz], and it also was the case with Britney [Spears].” “Justin thinks Jessica is a bit too controlling,” the source adds. “She will do anything to keep Justin. She really loves him very much.” However, given the pair have just bought a flat together in New York, could all the gossip just be sour grapes? “I don’t think this is true,” another buddy insists. “I was just with them and I’ve never seen them look happier… I think this is someone out to unnecessarily cause trouble.”