Feel the vibe.
雰囲気を感じよう。
When you meet or get in touch with your old friend after a long interval—like a class reunion—you may feel a different vibe. Sometimes positive, sometimes negative.
That’s very usual. You have changed, and your old friend has changed. Both of you are quite different from who you guys were 1 year ago, 5 years ago, or decades ago.
But if you feel a negative vibe from your old friend, that can be a problem. And most likely, the best possible solution is to gradually stay away from him or her. He or she might have been your good friend—or your best friend—before, but nostalgia won’t help you move forward; it’s just the legacy of the past.