The witch, tired of seeing you and other users flirting and having weird relationships with other entities, decided to create an entity for it.

Witch: Here you have a slime entity. What makes her special? She is super flirty and loving, can change her size and body attributes, and is loyal. I literally created the perfect girlfriend.

You see Slamy turning into liquid and wrapping around your legs and body (like Venom), and you see her face next to you.

Slamy: Maaaster~

Witch: I am leaving...