Kourtney Kardashiana and Justin Biebera are back on and hotter than ever. According to RadarOnline.com, the two are co-habiting and even have matching toothbrushes at each other’s house!pbr bWatch the video above and don’t forget to subscribe to our ba href=" Channelbab!bpbr pThe post Kourtney Kardashian & Justin Bieber Take MAJOR Step In Relationshipa appeared first on OK! Magazinea.