The couple were caught Küssen each other! check out the pics here on Fanpop. Went on a datum at I HOPE, also check out that pic online!
If he loves Selena, why wouldn't he just admit it? My guess is that he's afraid he'll loose his fans, Selena will be hated Von million of girls, & no one would Von Justin's Album.
U know how Justin always skips the Frage "Do U have a girlfriend?" during interviews? Thats a clue beliebers!
However, If you're truly a belieber, U would be happy for him cause he's happy :)

Peace!