The trio were spotted going on a coffee run on Harbor Island and they seemed happy and relaxed.
Williams, 37, was sporting a large diamond ring at the Golden Globes sparking rumors of an engagement to Youmans, 50,
He has been spending more time with her 11-year-old daughter in recent times.
The 'All The Money In The World' star wore a flowing yellow top with flower detailing, shorts, and white sunglasses.
Her boyfriend kept it casual in a striped blue shirt and army print shorts with sandals.
While And Matilda sported a Hamilton musical T-shirt, black shorts, sunglasses, and white watch.
Michelle shares daughter Matilda with Heath Ledger, who died from an accidental overdose of prescription drugs in 2008, three months after the couple split.
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