Sayde is cute, the soundtrack is sweet, the story is romantic and I liked what you did with the fireworks (including the way the camera moved and the lighting effects).
I also found it interesting how it
loops so flawlessly. Makes it look very distinct. And maybe some symbolism can be found there because, for example, they’ve been talking about being together forever. I guess they will be. Maybe, in a sense, that’s the happiest “ending” they can have.
And it made me wonder if it is actually toxic.
I guess Sayde can be considered to have toxic traits which the MC enables because of her own issues probably. But the way you wrote it makes it look like they complement each other, like they’re made for each other, so, in a sense, this may be actually wholesome.