What killed him?

It was in the year 2000 whilst visiting my elder sister Angelica in the city of kabwe of zambia after completing my highschool ,I meet a guy by the name David who was my brothers friend.Angelica owned a clothing store in town which was run by my elder brother, it so happened that David owned an outospare shop too just adjustment to my sisters shop.The first day I went to take food to my brother who was in charge at that time I found them charting upon him seeing me he quickly introduce me to David and told him to back off coz I was expected to go to university.As he greeted me he gave me a smile that gave me goose bumps in my stomach but within me I told my self, "am not ready for any relationship coz I need to go to college first". From his smile I knew he had love at first sight for me.