The 19-year-old singer, who had sparked reconciliation rumors with Gomez, 21, is apparently sad with the news about her rehab stint, reported Hollywood Life.
“He`s acting all tough, saying he`s over her but it`s obvious that he`s in a lot of pain over this. Selena and Justin are not in contact at all right now but I`m sure that will change.
Eventually one of them is going to give in; they really do love each other,” a source said.
Bieber`s recent arrest and other controversies reportedly affected the duo`s friendship.