“Call Me By Your Name” messed me up [Spoiler]

Last night I watched Call me by your name, I was really exited to see it and after watching it I realize that it was a beautiful, amazing movie. However the ending left me really sad and gloomy, and a day later I’m still thinking about it. Why do all gay love stories, books and movies, have a sad ending? It’s really messing with me and making me think that gay love is doomed to end in a sad way. Is Hollywood right? Do they all end sad?