Jennifer Lopez and Ben Affleck Are 'Starting to Talk About' Their 'Future' Together: Source

Jennifer Lopez and Ben Affleck are working towards taking their recently rekindled relationship to the next level.

A source close to the singer, 51, tells PEOPLE that she spent this past weekend in Los Angeles for business reasons, but also wanted to spend time with Affleck.

"They will continue to travel back and forth between Los Angeles and Miami," says the insider. "They are very happy together."

Furthermore, Lopez and the two-time Academy Award winner, 48, are reportedly "slowly starting to talk about the future."

"This is not a casual relationship," the source adds. "They are taking it seriously and want it to be long-lasting."

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DOUG KANTER/AFP via Getty Jennifer Lopez and Ben Affleck in 2002

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The couple's Los Angeles meetup comes a week after they were photographed together in Miami, including at Anatomy Miami Beach, Lopez's go-to gym.

"They were holding hands, hugging, kissing. They weren't trying to hide the fact that they were together," a source told PEOPLE at the time of the two during their workout sessions. "They are very much into each other and being together."

"Truthfully, they are really nice people," the insider added. "No one stands around the gym saying, 'Don't approach them.' No one bothers them; everyone is respectful. Everyone loves her. All the women are checking her out and her routine because she looks so amazing and is so strong."

Rumors of Lopez and Affleck's relationship first ignited in late April, when they were spotted outside her L.A. home following her split from Alex Rodriguez. The two later enjoyed a getaway to Montana, where they were photographed driving together on May 8.

Christopher Smith/invision/AP/shutterstock; emma mcyntire/getty Ben Affleck (L); Jennifer Lopez

The pair are prepared to make their cross-country situation work, with a source telling PEOPLE last week that Lopez and Affleck "are having fun and want to spend as much time together as possible."

"They don't want to hide anymore," the insider explained. "They are both excited about their relationship. They want to make sure they do everything they can to make this work."

"Jennifer is incredibly happy. She feels like she can just be herself around Ben," the source added of the pair, who dated in 2002 and got engaged later that year before splitting in January 2004.

Their reunion comes after Lopez and then-fiancé Rodriguez, 45, announced in March that they were working through some things, before they officially broke up in April. Affleck previously called it quits with then-girlfriend Ana de Armas in January, after they were first romantically linked in early 2020.