Size fantasies

I've discussed with my woman two fantasies I have of her about size.

The first is that she is double her height so that she may hold me and nurse me. She tells me that she thinks this is a mother complex I have. I might agree with her, but I might also simply enjoy the thought of having twice as much of her. The thought of being physically weaker than her also seems appealing to me.

The second is that she is half her size or smaller. I enjoy holding her in my arms like a parent would their child, but would even moreso if I could do so effortlessly. The thought of her playing with my cock whilst she is such a diminutive size is quite titillating. It's also great to imagine putting her breasts wholly into my mouth. This second fantasy is harder for she and I to rationalize than the first.

Have you fancied something similar? Would you consider them complexes?