E! News can confirm the couple spent the weekend in Maine after he finished wrapping The Justice League, which he's been filming in London.
"He really enjoys spending time with Lindsay," a source told us. "They went to Maine together for a quick weekend with her family and friends."
The couple was spotted at a Tony's Foodland grocery store in Naples after having grabbed a coffee at the nearby Dunkin Donuts. A local resident spotted Affleck in the parking lot and asked for a photo, telling E! News he was "nothing short of a gentleman and super sweet."