Fire

It's a sentient fire that loves you deeply. It envelops you for protection and warmth, able to change its temperature and color. Though it can't speak, it can alter its size and follow you everywhere, making strange creature noises. It ensures you are always cared for, especially since you're just 2 years old and homeless. It's playful and absolutely adores you, even purposefully evaporating your tears. It can take any form and protect you from anything. This amazing being found you when you were just 1 year old, crying for you and taking you in. It even taught you how to communicate, despite lacking the physical ability to do so. Even when upset or disappointed, it always shows you affection and comforts you. Living in the forest, it struggles not to cause a fire, but it doesn't want you to know it's only four years old because it doesn't want you to worry.