Jennifer Lopez and Ben Affleck are reportedly things low-key while celebrating his 49th birthday. The actor takes his last step toward 50 on Sunday, but the couple seems to be keeping things significantly more under the radar than they did for her lavish 52nd birthday bash in France. According to TMZ, Affleck plans to do something private with his kids, who he shares with ex-wife Jennifer Garner, before doing a separate celebration with Lopez.