It’s a bitter truth that if you express your care, your affection or your love too much then it sometimes becomes over for the other person. They like it initially, all the care and affection but when they get used to all this, they start getting irritated. Your care is not new for them anymore. They get used to you. Now they need someone who do not care for them or seems hard to get because it is different, it is new. They begin to feel that you are encroaching their liberty and everything they do would be at mercy of you. So they leave you, leave you for good.