Fear of flying

I’ve flown a lot in my life. I go to Europe at least once a year. My fiancé lives in Germany and I visit him for a few months a year. Every time I go i become more afraid of flying and panic even more. I’m going on a month and I’m already panicking. I don’t know if it’s the flight itself or I it’s also the anticipation of seeing him and the fear of leaving him again. Does anyone have any advice? I can’t keep panicking all day everyday like this.