Gabriel Aubry and Halle BerryGabriel Aubry and Halle Berry have split -- but they are still hammering out the details of a custody arrangement for their 2-year-old daughter Nahla.

"It's been pretty difficult for Gabriel to see Nahla the last few weeks. He's really getting sick of it and it's getting to the point where he is seriously considering his options regarding pursuing permanent custody. He refuses to give up rights to his daughter, he loves her more than anything and is determined to be a regular, full-time fixture in her life," a source told

"The latest issue is that Halle is due to move to South Africa during July, August and September to work on a movie and she wants to take Nahla with her full time. That would mean Gabriel not seeing his daughter for three whole months and there's no way he's going to allow that," the source added.