Why I Was Jealous Of My Best Friend’s Engagement And Why That’s OK
Why Am I Jealous of My Friend's Success?
Is your friend jealous of you? Quiz
Are You Guilty of Friend Jealousy, or a Victim of It?
Reading something like that makes a lot of people feel a bit less secure about their own romantic relationship than they did before.
Better learn early to keep these things at a reasonable level.
In the same way that somebody's success doesn't take anything away from your own, giving compliments doesn't take anything away from you.