Are Justin and Selena back together?

When Justin Bieber and Selena Gomez shared a whirlwind Fourth of July holiday together, it looked as though the notoriously on-again/off-again pair was back on track to being an official couple once again. The two stars went public with their weekend reunion when Justin posted an Instagram photo of them together with the caption, "#Heartbreaker"- the title of his new single and a possible reference to their drama. They then enjoyed a great night together with Justin's friends including Lil' Twist and Alfredo Flores. But even though Justin and Selena are clearly spending time together, it doesn't mean they're ready to be a couple again just yet. Selena is reportedly still concerned by Justin's recent wild behavior and so are her close friends. "Her pals have stuck by her through thick and thin, but the whole back and forth relationship with Justin is really starting to wear on them," an insider says. "None of her friends really like Justin- or at least, they don't like Selena with Justin. It's just not a healthy relationship." And when Selena's new Justin inspired Stars Dance song "Love Will Remember" leaked just a day after their reunion- featuring a voicemail clip that sounds like Justin saying he loves her "so, so much"- his rep quickly squashed rumors that it's actually him on the track.