There is a girl who is my college classmate. We haven't been in touch since graduation. She often chats with me, cooks and travels. But why don't you like me?

This is probably taking you as a spare tire, right? Your family conditions should be good, and your personal financial ability also shows that you have attracted her to live at home in reality, but this girl may still be young and still have illusions about love, and you have no conditions to make her fantasize. Analyze it yourself. If it's height and appearance, cut it off. If it's about your manners and personal accomplishment, try to change it.