Jennifer Garner would “do anything” for husband Ben Affleck.

The 39-year-old actress – who is currently pregnant with the couple’s third child – says the secret to their successful seven-year relationship is knowing how important it is to show appreciation.

“We both know we couldn’t do what we do without each other,” she tells InStyle. “Ben always says, ‘If you love it, we can make it happen.”

“He knows when to swoop in with the gesture. He’s sweet that way. Honestly, I would do anything for that man, because I know it’s not taken for granted,” she added.

Garner – who is already mother to Violet, 6, and Seraphina, 2 – also revealed how her third pregnancy has made the usually healthy eater crave junk food.

“My kids had never seen Doritos before. They would say, ‘Mom, where did you get that orange chip? I really want that.’ I wish I was one of those cute pregnant girls who wear skinny jeans throughout their pregnancies. But I just gain weight,” she said.