A flower will bloom with perfect conditions, and so it goes with relationships, love or anything else. If everything is going great, then it is easy. But a flower that can grow in bad conditions (adversity), is special because by all rights it shouldn't have bloomed, which makes it rare and beautiful. The same is true of love, or friendship I suppose. It is easy to have love and friendships, if everything is easy and happy. However, a friendship or romantic relationship that survives through really tough times when most people would have given up, would be considered rare and special. For example, two people who managed to stay the best of friends, even though one of them has to move away and they have trouble seeing each other, or perhaps two young lovers whose families have forbade them to be together because of religious or family reasons. If their love was to survive and bloom, even though their families tried to keep them apart, that would be a relationship that bloomed in the face of adversity.