Wendy Kromer seemed to have it all -- except a soul mate. So she logged on to an online dating service and found Scott Schell. After a week of e-mailing, they decided to meet. They found they had two significant things in common: Each is the fifth child in a large family; Scott had lost both his parents, and Wendy, her mother. After dating for a year and a half, Scott surprised Wendy with an engagement ring on Valentine's Day.