Are Justin Bieber and ex- Selena Gomez back on? Selena and Justin in less troubled times. TEEN girls across the world wrung their hands in despair after a pic showing pop star Justin Bieber with ex- Selena Gomez posted to Instagram fueled rumours their on-off romance could be back on. AreBieber, 19, posted a picture of himself alongside his ex-girlfriend Selena, with the caption '#heartbreaker'. In the picture actor Gomez is seen with heavily rouged lips, tortoise shell glasses and a hooded top, according to the Daily Mail. The pair split up in December after two years together. According to recent reports they have become friends again with actor Gomez seen attending a recent Bieber concert in Oslo. Meanwhile, a friend of Bieber's posted a video on Instagram of the Fourth of July celebrations that featured Bieber and appeared to show Selena too. According to entertainment website RadarOnline, Gomez's friends are unhappy about her rekindling her romance with Bieber, who has been making headlines in recent months for his diva-like behaviour. None of her friends really like Justin, or at least they don't like Selena with Justin,' a source told Radar. It's just not a healthy relationship.