If you ever get the chance to make a European country your home, even for a short time. Don't even question it, just jump on that plane and go. While missing your friends in the U.S. is bound to happen, it will teach you more about how you as a person act and feel and who is truly important in your life. You will also gain courage and confidence when you are able to successfully order food in a foreign country, when you successfully navigate foreign transportation for the first time, and when you learn that you can visit countries that speak a language you have never heard of before and you are able to navigate around and you are able to make people understand what you are trying to say or do.
The last four months have brought me countless opportunities to grow as a person, and I wouldn't change them for anything. Remember, if you are ever offered the chance to go to Europe, just close your eyes and jump on that opportunity.