Need help or advice on how to deal with it (25M and 23F)

Hello everyone, I know the best suggestion for my case would be to search and find some other asking the same question I will ask, since its probably one of, if not, the most asked question on this subreddit. I will probably be able to do that, soon, maybe next week, or in two weeks, but right now, I can’t, I don’t want to read other people experiences that may make me even more emotional than I already are.
I (25M) met this wonderful girl (23F) on November, and quickly noticed I liked her, I talked with her and see thought the same, so 2 months later we began dating. I knew from the very beginning that engaging in this relationship would be, at some point, painful, and don’t get me wrong, I would do it again, because the moments and experiences we lived together made it absolutely worth it. The moment it gets painful is now, she came to Spain from China to study a masters degree, and since she finished and her visa expires she has to go back, and even if I knew this from the very beginning, I was clearly not ready for this moment. She will take a flight in two days, the girl I love is going to be 10000km and 6 hours away, and I honestly don’t know how to feel better about it, I know we will keep chatting, even doing calls or videocalls, but I suppose everyone knows here that distance is very painful, not being able to touch her, tickle her, hug her, is very very painful for me. She is a very important part of my life, I enjoy my time with her so much, and for the past two weeks, seeing how close is her departure, I’m feeling very emotional all the time, trying to hide it from her, since I dont want to waste our last happy moments together, is also very difficult for me, and I don’t know anyone in a situation like this, so that’s why I came here, looking for help or some kind of advice on things I can do to feel better, and also things I can do for her to feel better too. Thank you in advance and sorry if this questions have been asked a million times.