Jennifer Lopez took a bike ride with her vocal coach, Stevie Mackey, in the Hamptons over the Fourth of July weekend, while her husband, Ben Affleck, stayed in Los Angeles amidst ongoing marital challenges. Mackey shared an Instagram photo of the pair on matching Linus bikes, captioning it, “Good times, good friends, good wheels.”

In the photo, Lopez, 54, donned a brown sweater, wide-leg white linen pants, white sneakers, and her wedding ring. Mackey, who has known Lopez for a decade, also posted a quote on his Instagram Story: “Life is like riding a bicycle. In order to keep your balance, you must keep moving.”

The “Let’s Get Loud” singer’s marriage has faced intense scrutiny since she attended the Met Gala alone in May. Reports later revealed that Lopez and Affleck have been living apart—Lopez in their Beverly Hills mansion and Affleck in a Brentwood rental. Their marital home is reportedly on the market. A source told Page Six that Affleck feels the past two years were like a “fever dream” and now doubts the viability of their relationship.

In recent weeks, the couple has continued to live separate lives, with no public sightings together for over a month. Lopez spent part of her summer traveling through Europe before celebrating the Fourth of July on the East Coast. Meanwhile, Affleck has been frequently spotted on the West Coast with his three children.