AceShowbiz -

Jennifer Lopez and Alex Rodriguez's relationship is going stronger than ever. After holding a charity concert together, the couple is now looking for a place to live in together and planning to look at businesses they can invest in together.

A source close to Lopez told PEOPLE that they are currently looking for an apartment together for the whole family. "They will invest together in a new home when they find the perfect one," the source said. "They are starting to make more financial decisions together. It's nice for Jennifer to be with a man who has his own money and spends it wisely."

The source added, "They really just complement each other and make each other better people. She thinks the world of Alex and is very excited about their future together."

Another insider told Us Weekly that they had more plans together. "[Moving in] isn't the only thing they are looking to do together. They are also looking at businesses they can invest in together," the insider said.

Meanwhile, the couple just hosted a benefit show for Puerto Rico entitled "One Voice: Somos Live! A Concert for Disaster Relief" with Lopez's ex-husband Marc Anthony on October 14. The concert, which featured the likes of Demi Lovato, Maroon 5, Stevie Wonder and Gwen Stefani, managed to raise $9 million, raising a total of $35 million with $26 million from their personal donations.

The "Shades of Blue" star's and Anthony's parents came to the U.S. from Puerto Rico, while the former baseball shortstop went back to his family in Dominician Republic, which also suffered a large-scale damage from Hurricane Maria.

A source said, "They are equally passionate about different causes and charities. Jennifer has been upset about the Puerto Rico situation. She knew she had to help. Alex has been very supportive and encouraging."

People can still donate to Somos Una Voz online via somosonevoice.com (English) and somosunavoz.com (Spanish) or message to 50555.