There are a lot of college students who don't contact each other, and no one bothers them. Since you disturb them sometimes, you should contact them more. If you don't want to, you can eat, drink and be merry. Contact them and leave them alone. I have graduated for many years, and now many of my classmates have lost contact. Because there is not so much intersection in life, and then there is not so much intersection in work, so we are drifting away and no one is in touch?