Jennifer Garner is flaunting her assets in a new magazine spread for Flaunt ... while also getting real about her relationship with her ex-husband, Ben Affleck.

Jennifer Garner explained one key facet of her co-parenting dynamic with ex-husband Ben Affleck, admitting why she feels “a little bit of loss” raising their three kids under separate roofs.

Jennifer Garner admits there is a "little bit of loss" in the way she parents her three kids after splitting from Ben Affleck ...