Sunday's guest to Ben Affleck's Los Angeles rental was unannounced. Reports state the star spent time with his estranged wife, Jennifer Lopez. Seen dropping off Samuel, her 12-year-old son with ex-wife Jennifer Garner, the 55-year-old singer and actress visited Century City Mall. According to a source, Lopez enjoys keeping in touch with Ben's kids following their Bel Air mansion's purchase-now under auction.

Turning 52 on Thursday, Ben was seen leaving his office sporting a gray suit, brown belt, and matching shoes. Along with an icy coffee and a big black leather duffel bag, he is also carrying. He is presumably working on his forthcoming movie 'Unstoppable', which stars Lopez and will premiere next month.

With a remix of her 1999 song "If You Had My Love," Jennifer Lopez has generated some buzz on Instagram that many suspected could be a message for Ben because the couple hasn't been seen together for two months. Along with showcasing Lopez in a yellow and white striped tank top near her pool, the image promoted her cocktail line, Delola.

Reports have also emerged that Ben's relationship with Jennifer's inner circle-including her former manager Benny Medina-has been tense. Medina tries to keep neutral, but sources indicate he still criticizes the marriage. Apart from that, Lopez's connection with Leah Remini has suffered as well, although they have just reunited.