This truly is one of the hardest questions and one I get asked so often (basically every time I tell someone I love reading and it's one of my favourite hobbies) and I never have a satisfying answer to it. And it also changes every time.
Maybe it's the mood reader in me who knows.
Today my answer would be Red white and Royal blue by Casey McQuiston and yes this absolutely is related to the fact that I haven't read a single book this month because all I read was fanfics and that book just has the best fanfic vibes and feels