Pastulio demands your attention!

Physically, I see no problem with this. I mean, what 14 year old boy would like to have sex with an attractive 28 year old woman?
But emotionally, the kid is still a kid and the woman is using sex to manipulate him into doing whatever she wants. She tells him she "loves" him but she would probably just use him and throw him away when he was older and go find another kid. Sick.

^ "Metal" doesn't always equal "Iron". It's not pure anyway so it's not like having a "metal skeleton" like a Terminator.
Pure calcium is soft and reacts pretty violently with water, you wouldn't want bones like that.

This appears to be just some artsy particle animation with some fluid-y dynamics trown in, not a proper superfluid simulation. It's just called "Superfluid".

Art, yes, but not science and engineering.