To put it simply, he is no longer the boy who is affectionate to you, but you always ask for his concern and hope to receive his heartfelt blessing on another birthday. This is too much, because why should others always have a deep affection for you? The sentence in Xu Zhimo's poem "Accidental" is especially suitable for you now-
I am a cloud in the sky, and the waves that occasionally cast on you-you don't need to be surprised, let alone happy-disappear in an instant. You and I met in the dark sea, you have yours, I have mine, direction; You might as well remember, but you'd better forget the light released at this meeting!
Yes, as the poem says, "You don't need to be surprised or happy." Not every affection will never leave. Things have changed, and many stories are gone. As the saying goes, this situation can be remembered, and it comes and goes unconsciously.