Only because Betty sucks at these kinds of sweeping romantic gestures, or at least when it comes to taking into account that real life isn't like in the movies. Bodies can't be lifted up all that easily, there's gravity and force and mass and— you know what, she really doesn't care. Screw science, Betty's holding her in her arms and she couldn't care any less about what it should be like.

This is perfect.

She leans in and tips her head to the side, still smiling even as she presses her lips to Betty's. One hand carefully moves so that her arm wraps around her shoulders, then the other, trying to help as much as she can in keeping her weight steady, even if Betty's the one doing most of the heavy lifting right now. Not that Ruth is particularly heavy, but still. She's mostly focused on the kissing.