what is love?

During college, I had a very quiet boyfriend. What I remember most about visiting his parents is the loud tick of the grandfather clock in the dining room as we silently ate our meal. With so little conversation I was quick to assess(评定，判断) his family as cold.
When my boyfriend and I got into his car to drive home, his father suddenly appeared with a spray(喷物) bottle and rag(擦布). Carfully,he began to wash his son's windshield. I could feel his caring through the glass.
"Wow,your father really loves you," I said to my boyfriend, who gave his father a sweet smile.
I learned another lesson about love a few years later when I began to earn a steady paycheck. My father, not someone to expree emotion, often called me early in the morning.
"Buy Xerox. It's a good share price,"he might say abruptly when I amswered the phone. No pleasant greeting or inquiry(调查研究) about my life, just a financial（财政的） directive（指令）.
His brusque(唐突) manner offended me and we often quarreled. One day, I thought about my father's business acumen(敏锐) and success, and I realized that his concern for my financial security（安全） lay behind his terse（简洁的） morning calls. He was showing his love in a most unorthodox(非正统) way, but showing it nonetheless(没有生气).
The next time he called and told me to buy a stock, I thanked him.