in the piece shown, Mars and Venus watch happily as a small cupid angel plays with a small dog.
As opposed to the irritated nature of Mars in the last piece, he seems more curious and content that before and is just fine with the Cupid being there. This may be a sign that he doesn't care who sees Venus and himself but cares greatly if one lays their hands on venus in any way.
Venus once again looks very happy, almost motherly, as the Cupid plays with the pup. She even has her hand on the Cupid's head, like a happy mother would, while he plays. This motherly appearance is enhanced by the child like demeanor of the Cupid.