I'm counting down the days until she leaves.

Don't count them, enjoy them.

I have a long-distance relationship and I still remember every single first day and every single last day of our times together. The feelings are so strong in those moments.

It is soul crashing leaving or watching her leave. Last time I asked her to sing me one last time the song she has had been casually chanting during our three weeks together. I broke to cry in the middle of the underground recalling it, knowing I wouldn't see her again for one year.

On the other hand, we meet again next month and I am counting the days. The last time, I drop my luggage with very important things, and I did not care whatsoever, I just wanted to run into her arms.

That is definitively something I wouldn't recommend to all people. It is extremely hard. The sheer force between extreme happiness and deep sadness can break you sometimes. We use TeamSpeak to play videogames and talk together, but many people do not share that kind of hobbies together, so it can be even harder for them to share moments.

Do what you feel is the correct thing for you to do. Aim, above all, to hold no regret of your decision. Because those regrets may grow bigger and not smaller. Aim to be as happy as you can.