You're 19 - many things will change for you and your friend in the next 6 years, and I'm not just talking about college. I was extremely unpunctual in my late teens and early 20s. I kicked that bad habit once I got my shit together.
Something to consider - figure what you want to achieve in college, apart from graduating. So stuff like building a social circle, reinventing yourself, exploring activities and experiences you can't do back home. If your friend can contribute to your achievement of said goals, then keep him around.
If you don't want to waste your time waiting around for your friend, then take monster's advice and tell him to show up 30/60 minutes before you intend to meet.
Something to consider - figure what you want to achieve in college, apart from graduating. So stuff like building a social circle, reinventing yourself, exploring activities and experiences you can't do back home. If your friend can contribute to your achievement of said goals, then keep him around.
If you don't want to waste your time waiting around for your friend, then take monster's advice and tell him to show up 30/60 minutes before you intend to meet.