OHMYGOSSIP — Justin Bieber has a conscience. The singer is apparently upset to see his ex-girlfriend Selena Gomez go through such a difficult time.

A source told HollywoodLife that Bieber was gutted to learn that Gomez’s got so bad that she had to briefly check into rehab.

“He feels bad about her situation,” a source said.

Justin thinks it’s up to Selena, who went to rehab briefly for “young adult issues” on Jan. 5, to take care of herself and keep herself in check.

“She’s got to control it and know her limit,” says the insider.

“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.”