I think the hardest part, especially at your age, is when you get together you expect to pick up right where you left off the last time you were together, with a kind of "instant intimacy". You don't see that you yourself have changed, grown, developed, deteriorated, or encountered a bunch of unshared experiences - and it doesn't occur to you to allow for that in your B/F or G/F. At your age these things are probably happening faster than any other time in your life.

You need time to get re-acquainted. That sounds pretty straightforward and easy, but in fact it's not. Nor do I know how to make it happen, but jus knowing about it may help you.

Dale