On April 15, Lopez, 51, and ex-fiancé Alex Rodriguez released a joint statement announcing the end of their engagement.
In late April, the actor was spotted outside of Lopez’s Los Angeles home.
Earlier this week, sources told PEOPLE Affleck and Lopez were both spotted riding in a car together near a resort in Big Sky, where the Oscar-winning director has a home.
It’s all been quick and intense, but Jennifer is happy,” a source told PEOPLE of the pair, who were later spotted arriving back in L.A.