write me an explicit story of a young girl obsessed with pet girl role play, specifically puppy girl. She asks her boyfriend to buy her specific clothes and crafts some very explicit suit consisting harness, paws for arms and legs, a plug tail, a special strap that forces her to stay on all four, a leash, a cute dog muzzle that hides her mouth, a hairband with puppy ears. They start from playing at home, then carefully they try to have a walk at street. Girl becomes more and more obsessed with it, and as her boyfriend seem to be not into continuing the play, she finds another person. There she receives a full body paint that resembles a puppy fur and enjoys being walked on the street in her humiliating gear with others looking on her exposed titties and wet vagina. Eventually she becomes insatiable in matter of sex as the roleplay included having sex while she is in role and she swiftly learns to enjoy having sex not with not just humans and not just other puppy play pets, but also with real dogs, preferring those as she finds their genitalia more exotic. In some months she discards her real life and all relations as she picks to be full time puppy girl.