Lawrence, 24, split from Martin after datign for four months apparently due to his proximity with estranged wife Gwyneth Paltrow.
Martin, 37, has been trying to make things up with Lawrence, and supported her at the world premiere of 'The Hunger Games: Mockingjay - Part 1', but he did not walk the red carpet, reported Female First.
"Jen cooled things with Chris because she thought he was keeping his options open and wanted to have his cake and eat it. But since then, Chris has been saying all the right things to Jen. He said he'd support her through the 'Hunger Games' tour and make her a priority," a source said.