Hiding out since the news broke late Tuesday, Pattinson is "really depressed," one source close to the actor, 26, tells Us Weekly. "He doesn't know what to do. He doesn't know if he should forgive her or not."
Stewart released an emotional, contrite apology to the world Wednesday afternoon, and behind closed doors is "devastated," another source close to both stars says. "She's very angry at herself. She's really not blaming anyone but herself."
First romantically linked in 2009, the Twilight costars have slowly begun sharing their real-life romance with the world-- with pals recently telling Us Weekly that Pattinson was mulling a marriage proposal and Stewart dreaming of starting a family with her man.
"Rob's whole experience of coming into fame was experienced with Kristen," says the first source. "This is going to be really tough. Nobody knows if they'll stay together at this point."