Vulnerability is simply softening of your heart towards a loved one. Most people get scared when they hear about vulnerability. They think that a vulnerable person is a weak person. Well, a brittle container, say a glass, will break much faster than a plastic one. Why? Because the plastic is softer. The softer one is more vulnerable and can take a beating while the expensive but brittle glass can't take a beating. It's hard and sensitive. Soften your heart and your relationships will work.